/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 06:45:26,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 06:45:26,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 06:45:26,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 06:45:26,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 06:45:26,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 06:45:26,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 06:45:26,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 06:45:26,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 06:45:26,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 06:45:26,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 06:45:26,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 06:45:26,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 06:45:26,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 06:45:26,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 06:45:26,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 06:45:26,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 06:45:26,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 06:45:26,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 06:45:26,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 06:45:26,719 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 06:45:26,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 06:45:26,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 06:45:26,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 06:45:26,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 06:45:26,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 06:45:26,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 06:45:26,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 06:45:26,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 06:45:26,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-19 06:45:26,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 06:45:26,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 06:45:26,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 06:45:26,748 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 06:45:26,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 06:45:26,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 06:45:26,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 06:45:26,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 06:45:26,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 06:45:26,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 06:45:26,749 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 06:45:26,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 06:45:26,750 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 06:45:26,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 06:45:26,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 06:45:26,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 06:45:26,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 06:45:26,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 06:45:26,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 06:45:26,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 06:45:26,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 06:45:26,750 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 06:45:26,751 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 06:45:26,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 06:45:26,751 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-19 06:45:26,751 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 06:45:26,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 06:45:27,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 06:45:27,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 06:45:27,003 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 06:45:27,005 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 06:45:27,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-03-19 06:45:27,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8fb5a9a0/0341220ba4d9409dbe2447e7ec4aa754/FLAG62baad7ac [2022-03-19 06:45:27,496 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 06:45:27,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-03-19 06:45:27,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8fb5a9a0/0341220ba4d9409dbe2447e7ec4aa754/FLAG62baad7ac [2022-03-19 06:45:27,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8fb5a9a0/0341220ba4d9409dbe2447e7ec4aa754 [2022-03-19 06:45:27,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 06:45:27,531 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 06:45:27,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 06:45:27,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 06:45:27,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 06:45:27,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:45:27" (1/1) ... [2022-03-19 06:45:27,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c9377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:27, skipping insertion in model container [2022-03-19 06:45:27,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:45:27" (1/1) ... [2022-03-19 06:45:27,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 06:45:27,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 06:45:27,720 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c[2072,2085] [2022-03-19 06:45:27,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 06:45:27,816 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 06:45:27,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c[2072,2085] [2022-03-19 06:45:27,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 06:45:27,898 INFO L208 MainTranslator]: Completed translation [2022-03-19 06:45:27,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:27 WrapperNode [2022-03-19 06:45:27,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 06:45:27,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 06:45:27,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 06:45:27,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 06:45:27,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:27" (1/1) ... [2022-03-19 06:45:27,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:27" (1/1) ... [2022-03-19 06:45:27,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:27" (1/1) ... [2022-03-19 06:45:27,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:27" (1/1) ... [2022-03-19 06:45:27,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:27" (1/1) ... [2022-03-19 06:45:27,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:27" (1/1) ... [2022-03-19 06:45:27,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:27" (1/1) ... [2022-03-19 06:45:27,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 06:45:27,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 06:45:27,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 06:45:27,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 06:45:28,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:27" (1/1) ... [2022-03-19 06:45:28,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 06:45:28,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:45:28,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 06:45:28,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 06:45:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 06:45:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 06:45:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 06:45:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-19 06:45:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-19 06:45:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSyncFilterWithTarget [2022-03-19 06:45:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPnp [2022-03-19 06:45:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2022-03-19 06:45:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfStartDevice [2022-03-19 06:45:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRemoveDevice [2022-03-19 06:45:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSendToNextDriver [2022-03-19 06:45:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPower [2022-03-19 06:45:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2022-03-19 06:45:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfCreate [2022-03-19 06:45:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2022-03-19 06:45:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDeviceControl [2022-03-19 06:45:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfShutdownFlush [2022-03-19 06:45:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfUnload [2022-03-19 06:45:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRegisterDevice [2022-03-19 06:45:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-19 06:45:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 06:45:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-19 06:45:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-19 06:45:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-19 06:45:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-19 06:45:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-19 06:45:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-19 06:45:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-19 06:45:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 06:45:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPnp [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfStartDevice [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRemoveDevice [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSendToNextDriver [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPower [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfCreate [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDeviceControl [2022-03-19 06:45:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfShutdownFlush [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRegisterDevice [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSyncFilterWithTarget [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfUnload [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 06:45:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 06:45:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 06:45:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 06:45:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 06:45:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 06:45:28,215 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 06:45:28,216 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 06:45:28,262 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:28,358 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-19 06:45:28,358 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-19 06:45:28,364 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:28,389 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-19 06:45:28,389 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-19 06:45:28,403 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:28,413 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-19 06:45:28,413 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-19 06:45:28,417 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:28,423 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:45:28,423 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:45:28,544 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:28,564 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-03-19 06:45:28,564 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-03-19 06:45:28,582 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:28,590 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-19 06:45:28,590 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-19 06:45:28,639 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 06:45:28,651 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 06:45:28,651 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 06:45:28,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:45:28 BoogieIcfgContainer [2022-03-19 06:45:28,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 06:45:28,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 06:45:28,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 06:45:28,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 06:45:28,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 06:45:27" (1/3) ... [2022-03-19 06:45:28,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c56b7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:45:28, skipping insertion in model container [2022-03-19 06:45:28,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:27" (2/3) ... [2022-03-19 06:45:28,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c56b7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:45:28, skipping insertion in model container [2022-03-19 06:45:28,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:45:28" (3/3) ... [2022-03-19 06:45:28,662 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf_simpl1.cil.c [2022-03-19 06:45:28,666 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 06:45:28,666 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 06:45:28,697 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 06:45:28,702 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 06:45:28,702 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 06:45:28,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 206 states have (on average 1.4271844660194175) internal successors, (294), 224 states have internal predecessors, (294), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2022-03-19 06:45:28,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-19 06:45:28,724 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:28,724 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:28,725 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:28,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash 717651403, now seen corresponding path program 1 times [2022-03-19 06:45:28,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:28,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1910585798] [2022-03-19 06:45:28,749 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:28,750 INFO L85 PathProgramCache]: Analyzing trace with hash 717651403, now seen corresponding path program 2 times [2022-03-19 06:45:28,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:28,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857543292] [2022-03-19 06:45:28,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:28,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:29,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:29,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:29,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:29,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857543292] [2022-03-19 06:45:29,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857543292] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:29,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:29,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 06:45:29,123 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:29,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1910585798] [2022-03-19 06:45:29,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1910585798] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:29,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:29,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 06:45:29,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110720527] [2022-03-19 06:45:29,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:29,128 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 06:45:29,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:29,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 06:45:29,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-19 06:45:29,165 INFO L87 Difference]: Start difference. First operand has 295 states, 206 states have (on average 1.4271844660194175) internal successors, (294), 224 states have internal predecessors, (294), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-19 06:45:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:29,981 INFO L93 Difference]: Finished difference Result 576 states and 845 transitions. [2022-03-19 06:45:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:45:29,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-03-19 06:45:29,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:29,993 INFO L225 Difference]: With dead ends: 576 [2022-03-19 06:45:29,993 INFO L226 Difference]: Without dead ends: 326 [2022-03-19 06:45:29,998 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-19 06:45:30,000 INFO L912 BasicCegarLoop]: 355 mSDtfsCounter, 234 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:30,001 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 597 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:45:30,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-03-19 06:45:30,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2022-03-19 06:45:30,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 201 states have (on average 1.373134328358209) internal successors, (276), 217 states have internal predecessors, (276), 61 states have call successors, (61), 26 states have call predecessors, (61), 24 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-03-19 06:45:30,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 383 transitions. [2022-03-19 06:45:30,060 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 383 transitions. Word has length 20 [2022-03-19 06:45:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:30,060 INFO L478 AbstractCegarLoop]: Abstraction has 287 states and 383 transitions. [2022-03-19 06:45:30,060 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-19 06:45:30,060 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 383 transitions. [2022-03-19 06:45:30,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-19 06:45:30,061 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:30,062 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:30,062 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 06:45:30,062 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:30,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:30,062 INFO L85 PathProgramCache]: Analyzing trace with hash -524387518, now seen corresponding path program 1 times [2022-03-19 06:45:30,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:30,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1407981394] [2022-03-19 06:45:30,063 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:30,063 INFO L85 PathProgramCache]: Analyzing trace with hash -524387518, now seen corresponding path program 2 times [2022-03-19 06:45:30,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:30,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648101143] [2022-03-19 06:45:30,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:30,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:30,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:30,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:30,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:30,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:30,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648101143] [2022-03-19 06:45:30,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648101143] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:30,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:30,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:30,200 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:30,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1407981394] [2022-03-19 06:45:30,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1407981394] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:30,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:30,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:30,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322341659] [2022-03-19 06:45:30,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:30,202 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:45:30,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:30,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:45:30,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 06:45:30,203 INFO L87 Difference]: Start difference. First operand 287 states and 383 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:30,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:30,986 INFO L93 Difference]: Finished difference Result 690 states and 962 transitions. [2022-03-19 06:45:30,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:45:30,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-03-19 06:45:30,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:30,991 INFO L225 Difference]: With dead ends: 690 [2022-03-19 06:45:30,991 INFO L226 Difference]: Without dead ends: 507 [2022-03-19 06:45:30,992 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:30,993 INFO L912 BasicCegarLoop]: 490 mSDtfsCounter, 573 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:30,993 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 682 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:45:30,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-03-19 06:45:31,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2022-03-19 06:45:31,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 318 states have (on average 1.3459119496855345) internal successors, (428), 329 states have internal predecessors, (428), 80 states have call successors, (80), 37 states have call predecessors, (80), 41 states have return successors, (100), 77 states have call predecessors, (100), 68 states have call successors, (100) [2022-03-19 06:45:31,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 608 transitions. [2022-03-19 06:45:31,065 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 608 transitions. Word has length 25 [2022-03-19 06:45:31,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:31,065 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 608 transitions. [2022-03-19 06:45:31,065 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:31,065 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 608 transitions. [2022-03-19 06:45:31,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-19 06:45:31,066 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:31,066 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:31,066 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 06:45:31,066 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:31,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:31,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1283608137, now seen corresponding path program 1 times [2022-03-19 06:45:31,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:31,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1795385811] [2022-03-19 06:45:31,067 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:31,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1283608137, now seen corresponding path program 2 times [2022-03-19 06:45:31,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:31,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301927333] [2022-03-19 06:45:31,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:31,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:31,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:31,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:31,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:31,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301927333] [2022-03-19 06:45:31,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301927333] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:31,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:31,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:31,218 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:31,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1795385811] [2022-03-19 06:45:31,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1795385811] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:31,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:31,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:31,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878361828] [2022-03-19 06:45:31,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:31,219 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:45:31,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:31,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:45:31,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 06:45:31,220 INFO L87 Difference]: Start difference. First operand 440 states and 608 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:31,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:31,868 INFO L93 Difference]: Finished difference Result 1013 states and 1458 transitions. [2022-03-19 06:45:31,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:45:31,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-03-19 06:45:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:31,874 INFO L225 Difference]: With dead ends: 1013 [2022-03-19 06:45:31,874 INFO L226 Difference]: Without dead ends: 690 [2022-03-19 06:45:31,876 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:31,876 INFO L912 BasicCegarLoop]: 402 mSDtfsCounter, 504 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:31,877 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 586 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:45:31,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-03-19 06:45:31,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 618. [2022-03-19 06:45:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 455 states have (on average 1.3560439560439561) internal successors, (617), 466 states have internal predecessors, (617), 109 states have call successors, (109), 49 states have call predecessors, (109), 53 states have return successors, (162), 105 states have call predecessors, (162), 98 states have call successors, (162) [2022-03-19 06:45:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 888 transitions. [2022-03-19 06:45:31,917 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 888 transitions. Word has length 31 [2022-03-19 06:45:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:31,917 INFO L478 AbstractCegarLoop]: Abstraction has 618 states and 888 transitions. [2022-03-19 06:45:31,917 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 888 transitions. [2022-03-19 06:45:31,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-19 06:45:31,919 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:31,919 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:31,919 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 06:45:31,919 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:31,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1553760270, now seen corresponding path program 1 times [2022-03-19 06:45:31,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:31,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2058134453] [2022-03-19 06:45:31,920 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1553760270, now seen corresponding path program 2 times [2022-03-19 06:45:31,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:31,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397852290] [2022-03-19 06:45:31,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:31,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:31,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:31,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:32,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:32,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397852290] [2022-03-19 06:45:32,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397852290] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:32,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:32,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:32,017 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:32,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2058134453] [2022-03-19 06:45:32,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2058134453] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:32,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:32,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:32,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671010824] [2022-03-19 06:45:32,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:32,018 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:45:32,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:32,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:45:32,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 06:45:32,019 INFO L87 Difference]: Start difference. First operand 618 states and 888 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:32,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:32,823 INFO L93 Difference]: Finished difference Result 665 states and 952 transitions. [2022-03-19 06:45:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:45:32,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-03-19 06:45:32,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:32,827 INFO L225 Difference]: With dead ends: 665 [2022-03-19 06:45:32,828 INFO L226 Difference]: Without dead ends: 661 [2022-03-19 06:45:32,828 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-19 06:45:32,829 INFO L912 BasicCegarLoop]: 340 mSDtfsCounter, 126 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:32,829 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 590 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:45:32,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-03-19 06:45:32,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 628. [2022-03-19 06:45:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 466 states have (on average 1.354077253218884) internal successors, (631), 475 states have internal predecessors, (631), 108 states have call successors, (108), 50 states have call predecessors, (108), 53 states have return successors, (162), 105 states have call predecessors, (162), 98 states have call successors, (162) [2022-03-19 06:45:32,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 901 transitions. [2022-03-19 06:45:32,864 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 901 transitions. Word has length 36 [2022-03-19 06:45:32,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:32,865 INFO L478 AbstractCegarLoop]: Abstraction has 628 states and 901 transitions. [2022-03-19 06:45:32,865 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:32,865 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 901 transitions. [2022-03-19 06:45:32,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-19 06:45:32,866 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:32,866 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:32,866 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-19 06:45:32,867 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:32,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:32,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1988078361, now seen corresponding path program 1 times [2022-03-19 06:45:32,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:32,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1074632848] [2022-03-19 06:45:32,867 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:32,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1988078361, now seen corresponding path program 2 times [2022-03-19 06:45:32,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:32,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950852098] [2022-03-19 06:45:32,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:32,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:32,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:32,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:32,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:32,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:33,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:33,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:33,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950852098] [2022-03-19 06:45:33,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950852098] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:33,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:33,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:33,031 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:33,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1074632848] [2022-03-19 06:45:33,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1074632848] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:33,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:33,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:33,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309314315] [2022-03-19 06:45:33,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:33,032 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:45:33,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:33,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:45:33,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:33,033 INFO L87 Difference]: Start difference. First operand 628 states and 901 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:34,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:34,167 INFO L93 Difference]: Finished difference Result 716 states and 1015 transitions. [2022-03-19 06:45:34,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:45:34,168 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-03-19 06:45:34,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:34,171 INFO L225 Difference]: With dead ends: 716 [2022-03-19 06:45:34,172 INFO L226 Difference]: Without dead ends: 705 [2022-03-19 06:45:34,172 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-03-19 06:45:34,173 INFO L912 BasicCegarLoop]: 302 mSDtfsCounter, 1044 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:34,173 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 750 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 06:45:34,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-19 06:45:34,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-19 06:45:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.348360655737705) internal successors, (658), 502 states have internal predecessors, (658), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2022-03-19 06:45:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 936 transitions. [2022-03-19 06:45:34,223 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 936 transitions. Word has length 39 [2022-03-19 06:45:34,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:34,223 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 936 transitions. [2022-03-19 06:45:34,223 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:34,224 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 936 transitions. [2022-03-19 06:45:34,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-19 06:45:34,225 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:34,225 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:34,225 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-19 06:45:34,225 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:34,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:34,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1064338611, now seen corresponding path program 1 times [2022-03-19 06:45:34,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:34,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1847992094] [2022-03-19 06:45:34,226 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:34,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1064338611, now seen corresponding path program 2 times [2022-03-19 06:45:34,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:34,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129775104] [2022-03-19 06:45:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:34,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:34,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:34,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:34,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:34,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129775104] [2022-03-19 06:45:34,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129775104] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:34,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:34,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:34,399 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:34,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1847992094] [2022-03-19 06:45:34,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1847992094] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:34,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:34,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:34,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636814169] [2022-03-19 06:45:34,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:34,400 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:45:34,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:34,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:45:34,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:34,400 INFO L87 Difference]: Start difference. First operand 658 states and 936 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:35,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:35,292 INFO L93 Difference]: Finished difference Result 713 states and 1008 transitions. [2022-03-19 06:45:35,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:45:35,293 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2022-03-19 06:45:35,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:35,296 INFO L225 Difference]: With dead ends: 713 [2022-03-19 06:45:35,296 INFO L226 Difference]: Without dead ends: 705 [2022-03-19 06:45:35,297 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-03-19 06:45:35,298 INFO L912 BasicCegarLoop]: 303 mSDtfsCounter, 787 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:35,299 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 653 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:45:35,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-19 06:45:35,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-19 06:45:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.346311475409836) internal successors, (657), 502 states have internal predecessors, (657), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2022-03-19 06:45:35,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 935 transitions. [2022-03-19 06:45:35,354 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 935 transitions. Word has length 40 [2022-03-19 06:45:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:35,354 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 935 transitions. [2022-03-19 06:45:35,355 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 935 transitions. [2022-03-19 06:45:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-19 06:45:35,356 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:35,356 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:35,356 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-19 06:45:35,356 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:35,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1632785520, now seen corresponding path program 1 times [2022-03-19 06:45:35,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:35,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [443564434] [2022-03-19 06:45:35,357 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1632785520, now seen corresponding path program 2 times [2022-03-19 06:45:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:35,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816770100] [2022-03-19 06:45:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:35,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:35,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:35,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:35,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:35,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:35,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:35,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816770100] [2022-03-19 06:45:35,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816770100] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:35,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:35,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:35,486 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:35,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [443564434] [2022-03-19 06:45:35,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [443564434] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:35,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:35,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:35,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141254036] [2022-03-19 06:45:35,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:35,486 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:45:35,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:45:35,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:35,487 INFO L87 Difference]: Start difference. First operand 658 states and 935 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:36,336 INFO L93 Difference]: Finished difference Result 1215 states and 1783 transitions. [2022-03-19 06:45:36,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 06:45:36,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2022-03-19 06:45:36,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:36,344 INFO L225 Difference]: With dead ends: 1215 [2022-03-19 06:45:36,345 INFO L226 Difference]: Without dead ends: 1186 [2022-03-19 06:45:36,345 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:45:36,346 INFO L912 BasicCegarLoop]: 392 mSDtfsCounter, 995 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:36,347 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 798 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:45:36,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-03-19 06:45:36,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1085. [2022-03-19 06:45:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 817 states have (on average 1.3635250917992656) internal successors, (1114), 835 states have internal predecessors, (1114), 173 states have call successors, (173), 79 states have call predecessors, (173), 94 states have return successors, (315), 175 states have call predecessors, (315), 163 states have call successors, (315) [2022-03-19 06:45:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1602 transitions. [2022-03-19 06:45:36,440 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1602 transitions. Word has length 41 [2022-03-19 06:45:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:36,441 INFO L478 AbstractCegarLoop]: Abstraction has 1085 states and 1602 transitions. [2022-03-19 06:45:36,442 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:36,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1602 transitions. [2022-03-19 06:45:36,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-19 06:45:36,442 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:36,443 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:36,443 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-19 06:45:36,443 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:36,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:36,443 INFO L85 PathProgramCache]: Analyzing trace with hash 931290683, now seen corresponding path program 1 times [2022-03-19 06:45:36,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:36,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [927893741] [2022-03-19 06:45:36,444 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:36,444 INFO L85 PathProgramCache]: Analyzing trace with hash 931290683, now seen corresponding path program 2 times [2022-03-19 06:45:36,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:36,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458348131] [2022-03-19 06:45:36,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:36,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:36,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:36,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:36,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:36,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:36,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:36,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458348131] [2022-03-19 06:45:36,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458348131] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:36,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:36,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:36,609 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:36,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [927893741] [2022-03-19 06:45:36,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [927893741] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:36,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:36,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:36,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795508653] [2022-03-19 06:45:36,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:36,610 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 06:45:36,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:36,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 06:45:36,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:45:36,611 INFO L87 Difference]: Start difference. First operand 1085 states and 1602 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:37,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:37,190 INFO L93 Difference]: Finished difference Result 1170 states and 1724 transitions. [2022-03-19 06:45:37,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 06:45:37,190 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2022-03-19 06:45:37,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:37,198 INFO L225 Difference]: With dead ends: 1170 [2022-03-19 06:45:37,198 INFO L226 Difference]: Without dead ends: 1148 [2022-03-19 06:45:37,199 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:45:37,200 INFO L912 BasicCegarLoop]: 327 mSDtfsCounter, 458 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:37,200 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1018 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:45:37,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-03-19 06:45:37,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1078. [2022-03-19 06:45:37,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 813 states have (on average 1.3640836408364083) internal successors, (1109), 831 states have internal predecessors, (1109), 171 states have call successors, (171), 78 states have call predecessors, (171), 93 states have return successors, (313), 173 states have call predecessors, (313), 161 states have call successors, (313) [2022-03-19 06:45:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1593 transitions. [2022-03-19 06:45:37,316 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1593 transitions. Word has length 42 [2022-03-19 06:45:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:37,316 INFO L478 AbstractCegarLoop]: Abstraction has 1078 states and 1593 transitions. [2022-03-19 06:45:37,316 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1593 transitions. [2022-03-19 06:45:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-19 06:45:37,317 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:37,317 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:37,317 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-19 06:45:37,318 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:37,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:37,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1303038604, now seen corresponding path program 1 times [2022-03-19 06:45:37,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:37,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [14719484] [2022-03-19 06:45:37,318 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:37,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1303038604, now seen corresponding path program 2 times [2022-03-19 06:45:37,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:37,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437623353] [2022-03-19 06:45:37,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:37,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:37,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:37,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:37,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:37,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:37,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437623353] [2022-03-19 06:45:37,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437623353] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:37,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:37,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:37,408 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:37,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [14719484] [2022-03-19 06:45:37,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [14719484] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:37,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:37,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:37,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478438894] [2022-03-19 06:45:37,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:37,409 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:45:37,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:37,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:45:37,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 06:45:37,410 INFO L87 Difference]: Start difference. First operand 1078 states and 1593 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:38,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:38,093 INFO L93 Difference]: Finished difference Result 1507 states and 2275 transitions. [2022-03-19 06:45:38,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:45:38,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-03-19 06:45:38,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:38,097 INFO L225 Difference]: With dead ends: 1507 [2022-03-19 06:45:38,097 INFO L226 Difference]: Without dead ends: 599 [2022-03-19 06:45:38,102 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:38,104 INFO L912 BasicCegarLoop]: 281 mSDtfsCounter, 370 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:38,104 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 340 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:45:38,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-03-19 06:45:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 598. [2022-03-19 06:45:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 443 states have (on average 1.327313769751693) internal successors, (588), 455 states have internal predecessors, (588), 102 states have call successors, (102), 47 states have call predecessors, (102), 52 states have return successors, (160), 98 states have call predecessors, (160), 94 states have call successors, (160) [2022-03-19 06:45:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 850 transitions. [2022-03-19 06:45:38,150 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 850 transitions. Word has length 45 [2022-03-19 06:45:38,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:38,150 INFO L478 AbstractCegarLoop]: Abstraction has 598 states and 850 transitions. [2022-03-19 06:45:38,151 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:38,151 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 850 transitions. [2022-03-19 06:45:38,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-19 06:45:38,152 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:38,152 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:38,152 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-19 06:45:38,152 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:38,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:38,155 INFO L85 PathProgramCache]: Analyzing trace with hash -66301101, now seen corresponding path program 1 times [2022-03-19 06:45:38,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:38,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1575518708] [2022-03-19 06:45:38,155 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:38,155 INFO L85 PathProgramCache]: Analyzing trace with hash -66301101, now seen corresponding path program 2 times [2022-03-19 06:45:38,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:38,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999113137] [2022-03-19 06:45:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:38,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:38,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:38,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:38,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 06:45:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:38,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:45:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:38,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:38,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999113137] [2022-03-19 06:45:38,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999113137] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:38,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:38,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:45:38,294 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:38,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1575518708] [2022-03-19 06:45:38,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1575518708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:38,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:38,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:45:38,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537724655] [2022-03-19 06:45:38,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:38,294 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 06:45:38,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:38,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 06:45:38,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:45:38,295 INFO L87 Difference]: Start difference. First operand 598 states and 850 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:39,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:39,160 INFO L93 Difference]: Finished difference Result 633 states and 893 transitions. [2022-03-19 06:45:39,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 06:45:39,161 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-03-19 06:45:39,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:39,163 INFO L225 Difference]: With dead ends: 633 [2022-03-19 06:45:39,164 INFO L226 Difference]: Without dead ends: 608 [2022-03-19 06:45:39,164 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:45:39,165 INFO L912 BasicCegarLoop]: 293 mSDtfsCounter, 112 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:39,165 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1208 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:45:39,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-03-19 06:45:39,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 596. [2022-03-19 06:45:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 442 states have (on average 1.3235294117647058) internal successors, (585), 454 states have internal predecessors, (585), 101 states have call successors, (101), 47 states have call predecessors, (101), 52 states have return successors, (159), 97 states have call predecessors, (159), 93 states have call successors, (159) [2022-03-19 06:45:39,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 845 transitions. [2022-03-19 06:45:39,209 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 845 transitions. Word has length 46 [2022-03-19 06:45:39,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:39,209 INFO L478 AbstractCegarLoop]: Abstraction has 596 states and 845 transitions. [2022-03-19 06:45:39,209 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:39,209 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 845 transitions. [2022-03-19 06:45:39,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-19 06:45:39,210 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:39,210 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:39,210 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-19 06:45:39,210 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:39,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:39,210 INFO L85 PathProgramCache]: Analyzing trace with hash -12862173, now seen corresponding path program 1 times [2022-03-19 06:45:39,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:39,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1406328672] [2022-03-19 06:45:39,211 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:39,211 INFO L85 PathProgramCache]: Analyzing trace with hash -12862173, now seen corresponding path program 2 times [2022-03-19 06:45:39,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:39,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756194543] [2022-03-19 06:45:39,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:39,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:39,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:39,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 06:45:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:39,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:45:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:39,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:39,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756194543] [2022-03-19 06:45:39,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756194543] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:39,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:39,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:39,352 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:39,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1406328672] [2022-03-19 06:45:39,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1406328672] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:39,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:39,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:39,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076706283] [2022-03-19 06:45:39,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:39,354 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:45:39,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:39,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:45:39,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:39,354 INFO L87 Difference]: Start difference. First operand 596 states and 845 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:40,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:40,261 INFO L93 Difference]: Finished difference Result 834 states and 1234 transitions. [2022-03-19 06:45:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 06:45:40,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-03-19 06:45:40,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:40,265 INFO L225 Difference]: With dead ends: 834 [2022-03-19 06:45:40,265 INFO L226 Difference]: Without dead ends: 826 [2022-03-19 06:45:40,266 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:45:40,266 INFO L912 BasicCegarLoop]: 324 mSDtfsCounter, 498 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:40,266 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 703 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:45:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-03-19 06:45:40,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 665. [2022-03-19 06:45:40,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 495 states have (on average 1.3232323232323233) internal successors, (655), 508 states have internal predecessors, (655), 109 states have call successors, (109), 50 states have call predecessors, (109), 60 states have return successors, (184), 110 states have call predecessors, (184), 101 states have call successors, (184) [2022-03-19 06:45:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 948 transitions. [2022-03-19 06:45:40,323 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 948 transitions. Word has length 46 [2022-03-19 06:45:40,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:40,323 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 948 transitions. [2022-03-19 06:45:40,323 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:40,323 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 948 transitions. [2022-03-19 06:45:40,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-19 06:45:40,324 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:40,324 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:40,324 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-19 06:45:40,324 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:40,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:40,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1099213797, now seen corresponding path program 1 times [2022-03-19 06:45:40,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:40,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [292076390] [2022-03-19 06:45:40,325 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:40,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1099213797, now seen corresponding path program 2 times [2022-03-19 06:45:40,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:40,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296221204] [2022-03-19 06:45:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:40,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:40,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:40,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:40,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-19 06:45:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:40,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:40,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:40,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296221204] [2022-03-19 06:45:40,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296221204] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:40,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:40,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:40,446 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:40,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [292076390] [2022-03-19 06:45:40,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [292076390] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:40,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:40,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:40,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866134816] [2022-03-19 06:45:40,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:40,446 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:45:40,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:40,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:45:40,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:40,447 INFO L87 Difference]: Start difference. First operand 665 states and 948 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-19 06:45:41,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:41,076 INFO L93 Difference]: Finished difference Result 739 states and 1021 transitions. [2022-03-19 06:45:41,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 06:45:41,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-03-19 06:45:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:41,078 INFO L225 Difference]: With dead ends: 739 [2022-03-19 06:45:41,078 INFO L226 Difference]: Without dead ends: 462 [2022-03-19 06:45:41,080 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:41,080 INFO L912 BasicCegarLoop]: 314 mSDtfsCounter, 549 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:41,080 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 651 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:45:41,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-03-19 06:45:41,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 441. [2022-03-19 06:45:41,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 327 states have (on average 1.27217125382263) internal successors, (416), 338 states have internal predecessors, (416), 69 states have call successors, (69), 38 states have call predecessors, (69), 44 states have return successors, (93), 68 states have call predecessors, (93), 61 states have call successors, (93) [2022-03-19 06:45:41,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 578 transitions. [2022-03-19 06:45:41,152 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 578 transitions. Word has length 50 [2022-03-19 06:45:41,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:41,152 INFO L478 AbstractCegarLoop]: Abstraction has 441 states and 578 transitions. [2022-03-19 06:45:41,152 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-19 06:45:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 578 transitions. [2022-03-19 06:45:41,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-19 06:45:41,153 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:41,153 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:41,153 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-19 06:45:41,153 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:41,153 INFO L85 PathProgramCache]: Analyzing trace with hash 54275897, now seen corresponding path program 1 times [2022-03-19 06:45:41,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:41,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [51431841] [2022-03-19 06:45:41,154 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash 54275897, now seen corresponding path program 2 times [2022-03-19 06:45:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:41,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127443900] [2022-03-19 06:45:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:41,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:41,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:41,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:41,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 06:45:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:45:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:41,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:41,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:41,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127443900] [2022-03-19 06:45:41,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127443900] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:41,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:41,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:41,335 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:41,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [51431841] [2022-03-19 06:45:41,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [51431841] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:41,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:41,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:41,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997377390] [2022-03-19 06:45:41,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:41,336 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 06:45:41,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:41,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 06:45:41,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:45:41,336 INFO L87 Difference]: Start difference. First operand 441 states and 578 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:42,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:42,292 INFO L93 Difference]: Finished difference Result 457 states and 597 transitions. [2022-03-19 06:45:42,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:45:42,292 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-03-19 06:45:42,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:42,294 INFO L225 Difference]: With dead ends: 457 [2022-03-19 06:45:42,294 INFO L226 Difference]: Without dead ends: 453 [2022-03-19 06:45:42,295 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:45:42,295 INFO L912 BasicCegarLoop]: 284 mSDtfsCounter, 91 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:42,295 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 1490 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-19 06:45:42,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-19 06:45:42,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 449. [2022-03-19 06:45:42,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 334 states have (on average 1.2724550898203593) internal successors, (425), 346 states have internal predecessors, (425), 70 states have call successors, (70), 38 states have call predecessors, (70), 44 states have return successors, (94), 69 states have call predecessors, (94), 62 states have call successors, (94) [2022-03-19 06:45:42,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 589 transitions. [2022-03-19 06:45:42,336 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 589 transitions. Word has length 47 [2022-03-19 06:45:42,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:42,337 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 589 transitions. [2022-03-19 06:45:42,337 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:42,337 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 589 transitions. [2022-03-19 06:45:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-19 06:45:42,337 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:42,337 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:42,337 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-19 06:45:42,338 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:42,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:42,338 INFO L85 PathProgramCache]: Analyzing trace with hash 53999067, now seen corresponding path program 1 times [2022-03-19 06:45:42,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:42,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1259136061] [2022-03-19 06:45:42,338 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:42,338 INFO L85 PathProgramCache]: Analyzing trace with hash 53999067, now seen corresponding path program 2 times [2022-03-19 06:45:42,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:42,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27917301] [2022-03-19 06:45:42,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:42,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:42,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:42,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:42,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:42,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 06:45:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:42,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:45:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:42,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:42,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27917301] [2022-03-19 06:45:42,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27917301] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:42,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:42,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:42,546 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:42,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1259136061] [2022-03-19 06:45:42,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1259136061] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:42,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:42,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:42,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775095717] [2022-03-19 06:45:42,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:42,546 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 06:45:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 06:45:42,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:45:42,547 INFO L87 Difference]: Start difference. First operand 449 states and 589 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:43,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:43,327 INFO L93 Difference]: Finished difference Result 780 states and 1069 transitions. [2022-03-19 06:45:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:45:43,328 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-03-19 06:45:43,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:43,330 INFO L225 Difference]: With dead ends: 780 [2022-03-19 06:45:43,330 INFO L226 Difference]: Without dead ends: 472 [2022-03-19 06:45:43,332 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-19 06:45:43,332 INFO L912 BasicCegarLoop]: 286 mSDtfsCounter, 188 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:43,332 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 1502 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:45:43,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-03-19 06:45:43,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 459. [2022-03-19 06:45:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 343 states have (on average 1.2769679300291545) internal successors, (438), 356 states have internal predecessors, (438), 70 states have call successors, (70), 38 states have call predecessors, (70), 45 states have return successors, (96), 69 states have call predecessors, (96), 62 states have call successors, (96) [2022-03-19 06:45:43,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 604 transitions. [2022-03-19 06:45:43,376 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 604 transitions. Word has length 47 [2022-03-19 06:45:43,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:43,376 INFO L478 AbstractCegarLoop]: Abstraction has 459 states and 604 transitions. [2022-03-19 06:45:43,376 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:43,377 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 604 transitions. [2022-03-19 06:45:43,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-19 06:45:43,377 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:43,377 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:43,377 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-19 06:45:43,377 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:43,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:43,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1706472498, now seen corresponding path program 1 times [2022-03-19 06:45:43,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:43,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [165696553] [2022-03-19 06:45:43,378 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:43,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1706472498, now seen corresponding path program 2 times [2022-03-19 06:45:43,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:43,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846057387] [2022-03-19 06:45:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:43,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:43,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:43,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 06:45:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:43,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:45:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:43,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:43,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846057387] [2022-03-19 06:45:43,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846057387] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:43,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:43,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:43,548 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:43,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [165696553] [2022-03-19 06:45:43,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [165696553] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:43,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:43,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:43,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476908679] [2022-03-19 06:45:43,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:43,548 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 06:45:43,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:43,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 06:45:43,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:45:43,549 INFO L87 Difference]: Start difference. First operand 459 states and 604 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:44,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:44,516 INFO L93 Difference]: Finished difference Result 594 states and 812 transitions. [2022-03-19 06:45:44,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 06:45:44,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2022-03-19 06:45:44,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:44,519 INFO L225 Difference]: With dead ends: 594 [2022-03-19 06:45:44,519 INFO L226 Difference]: Without dead ends: 575 [2022-03-19 06:45:44,519 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:45:44,520 INFO L912 BasicCegarLoop]: 315 mSDtfsCounter, 1049 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:44,520 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 697 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:45:44,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-03-19 06:45:44,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 444. [2022-03-19 06:45:44,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 332 states have (on average 1.2771084337349397) internal successors, (424), 343 states have internal predecessors, (424), 68 states have call successors, (68), 38 states have call predecessors, (68), 43 states have return successors, (91), 66 states have call predecessors, (91), 60 states have call successors, (91) [2022-03-19 06:45:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 583 transitions. [2022-03-19 06:45:44,563 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 583 transitions. Word has length 48 [2022-03-19 06:45:44,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:44,563 INFO L478 AbstractCegarLoop]: Abstraction has 444 states and 583 transitions. [2022-03-19 06:45:44,563 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:44,563 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 583 transitions. [2022-03-19 06:45:44,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-19 06:45:44,564 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:44,564 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:44,564 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-19 06:45:44,564 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:44,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:44,564 INFO L85 PathProgramCache]: Analyzing trace with hash 537684808, now seen corresponding path program 1 times [2022-03-19 06:45:44,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:44,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [796617677] [2022-03-19 06:45:44,565 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:44,565 INFO L85 PathProgramCache]: Analyzing trace with hash 537684808, now seen corresponding path program 2 times [2022-03-19 06:45:44,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:44,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400241494] [2022-03-19 06:45:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:44,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:44,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:44,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:44,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:44,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 06:45:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:44,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:44,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:44,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400241494] [2022-03-19 06:45:44,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400241494] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:44,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:44,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:44,704 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:44,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [796617677] [2022-03-19 06:45:44,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [796617677] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:44,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:44,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:44,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195316340] [2022-03-19 06:45:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:44,705 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:45:44,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:45:44,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:44,705 INFO L87 Difference]: Start difference. First operand 444 states and 583 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:45,345 INFO L93 Difference]: Finished difference Result 458 states and 599 transitions. [2022-03-19 06:45:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:45:45,345 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2022-03-19 06:45:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:45,347 INFO L225 Difference]: With dead ends: 458 [2022-03-19 06:45:45,347 INFO L226 Difference]: Without dead ends: 427 [2022-03-19 06:45:45,348 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:45:45,348 INFO L912 BasicCegarLoop]: 289 mSDtfsCounter, 231 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:45,348 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 1515 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:45:45,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-03-19 06:45:45,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2022-03-19 06:45:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 318 states have (on average 1.279874213836478) internal successors, (407), 330 states have internal predecessors, (407), 66 states have call successors, (66), 36 states have call predecessors, (66), 42 states have return successors, (89), 64 states have call predecessors, (89), 58 states have call successors, (89) [2022-03-19 06:45:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 562 transitions. [2022-03-19 06:45:45,409 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 562 transitions. Word has length 49 [2022-03-19 06:45:45,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:45,410 INFO L478 AbstractCegarLoop]: Abstraction has 427 states and 562 transitions. [2022-03-19 06:45:45,410 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:45,410 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 562 transitions. [2022-03-19 06:45:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-19 06:45:45,411 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:45,411 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:45,411 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-19 06:45:45,411 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:45,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:45,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1134618754, now seen corresponding path program 1 times [2022-03-19 06:45:45,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:45,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1350179549] [2022-03-19 06:45:45,411 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:45,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1134618754, now seen corresponding path program 2 times [2022-03-19 06:45:45,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:45,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319918260] [2022-03-19 06:45:45,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:45,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:45,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:45,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:45,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:45,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 06:45:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:45,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-19 06:45:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:45,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:45,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319918260] [2022-03-19 06:45:45,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319918260] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:45,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:45,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:45:45,545 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:45,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1350179549] [2022-03-19 06:45:45,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1350179549] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:45,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:45,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:45:45,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997314524] [2022-03-19 06:45:45,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:45,545 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 06:45:45,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:45,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 06:45:45,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:45:45,546 INFO L87 Difference]: Start difference. First operand 427 states and 562 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:46,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:46,363 INFO L93 Difference]: Finished difference Result 456 states and 600 transitions. [2022-03-19 06:45:46,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:45:46,363 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-03-19 06:45:46,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:46,365 INFO L225 Difference]: With dead ends: 456 [2022-03-19 06:45:46,365 INFO L226 Difference]: Without dead ends: 423 [2022-03-19 06:45:46,366 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:45:46,366 INFO L912 BasicCegarLoop]: 271 mSDtfsCounter, 174 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:46,366 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1146 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:45:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-03-19 06:45:46,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 409. [2022-03-19 06:45:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 304 states have (on average 1.2861842105263157) internal successors, (391), 316 states have internal predecessors, (391), 64 states have call successors, (64), 34 states have call predecessors, (64), 40 states have return successors, (87), 62 states have call predecessors, (87), 56 states have call successors, (87) [2022-03-19 06:45:46,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 542 transitions. [2022-03-19 06:45:46,406 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 542 transitions. Word has length 50 [2022-03-19 06:45:46,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:46,406 INFO L478 AbstractCegarLoop]: Abstraction has 409 states and 542 transitions. [2022-03-19 06:45:46,406 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 542 transitions. [2022-03-19 06:45:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-19 06:45:46,407 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:46,407 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:46,407 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-19 06:45:46,407 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:46,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:46,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1095396871, now seen corresponding path program 1 times [2022-03-19 06:45:46,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:46,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [981525655] [2022-03-19 06:45:46,408 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:46,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1095396871, now seen corresponding path program 2 times [2022-03-19 06:45:46,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:46,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919960437] [2022-03-19 06:45:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:46,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:46,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:46,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 06:45:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:46,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:46,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:46,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919960437] [2022-03-19 06:45:46,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919960437] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:46,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:46,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:45:46,561 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:46,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [981525655] [2022-03-19 06:45:46,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [981525655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:46,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:46,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:45:46,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502574770] [2022-03-19 06:45:46,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:46,561 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 06:45:46,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:46,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 06:45:46,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:45:46,562 INFO L87 Difference]: Start difference. First operand 409 states and 542 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 06:45:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:48,090 INFO L93 Difference]: Finished difference Result 634 states and 905 transitions. [2022-03-19 06:45:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 06:45:48,091 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-03-19 06:45:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:48,093 INFO L225 Difference]: With dead ends: 634 [2022-03-19 06:45:48,093 INFO L226 Difference]: Without dead ends: 600 [2022-03-19 06:45:48,094 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-03-19 06:45:48,094 INFO L912 BasicCegarLoop]: 417 mSDtfsCounter, 622 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:48,094 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 1383 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-19 06:45:48,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-03-19 06:45:48,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 534. [2022-03-19 06:45:48,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 399 states have (on average 1.3433583959899749) internal successors, (536), 410 states have internal predecessors, (536), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-19 06:45:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 769 transitions. [2022-03-19 06:45:48,148 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 769 transitions. Word has length 50 [2022-03-19 06:45:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:48,148 INFO L478 AbstractCegarLoop]: Abstraction has 534 states and 769 transitions. [2022-03-19 06:45:48,148 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 06:45:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 769 transitions. [2022-03-19 06:45:48,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-19 06:45:48,149 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:48,149 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:48,149 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-19 06:45:48,149 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:48,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:48,149 INFO L85 PathProgramCache]: Analyzing trace with hash -891835120, now seen corresponding path program 1 times [2022-03-19 06:45:48,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:48,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [647306458] [2022-03-19 06:45:48,149 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:48,149 INFO L85 PathProgramCache]: Analyzing trace with hash -891835120, now seen corresponding path program 2 times [2022-03-19 06:45:48,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:48,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662144154] [2022-03-19 06:45:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:48,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 06:45:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:48,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:48,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662144154] [2022-03-19 06:45:48,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662144154] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:48,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:48,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:48,271 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:48,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [647306458] [2022-03-19 06:45:48,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [647306458] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:48,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:48,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:48,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311928111] [2022-03-19 06:45:48,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:48,272 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 06:45:48,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:48,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 06:45:48,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:45:48,272 INFO L87 Difference]: Start difference. First operand 534 states and 769 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:48,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:48,982 INFO L93 Difference]: Finished difference Result 587 states and 833 transitions. [2022-03-19 06:45:48,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:45:48,983 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2022-03-19 06:45:48,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:48,985 INFO L225 Difference]: With dead ends: 587 [2022-03-19 06:45:48,985 INFO L226 Difference]: Without dead ends: 555 [2022-03-19 06:45:48,986 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-03-19 06:45:48,986 INFO L912 BasicCegarLoop]: 240 mSDtfsCounter, 616 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:48,987 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 730 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:45:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-03-19 06:45:49,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 537. [2022-03-19 06:45:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 402 states have (on average 1.3432835820895523) internal successors, (540), 413 states have internal predecessors, (540), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-19 06:45:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 773 transitions. [2022-03-19 06:45:49,055 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 773 transitions. Word has length 51 [2022-03-19 06:45:49,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:49,055 INFO L478 AbstractCegarLoop]: Abstraction has 537 states and 773 transitions. [2022-03-19 06:45:49,056 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:49,056 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 773 transitions. [2022-03-19 06:45:49,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-19 06:45:49,056 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:49,056 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:49,056 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-19 06:45:49,056 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:49,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:49,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1408987470, now seen corresponding path program 1 times [2022-03-19 06:45:49,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:49,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1023528923] [2022-03-19 06:45:49,057 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:49,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1408987470, now seen corresponding path program 2 times [2022-03-19 06:45:49,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:49,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239747856] [2022-03-19 06:45:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:49,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:49,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:49,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 06:45:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:49,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:49,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:49,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239747856] [2022-03-19 06:45:49,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239747856] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:49,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:49,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:49,208 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:49,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1023528923] [2022-03-19 06:45:49,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1023528923] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:49,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:49,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:49,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904504106] [2022-03-19 06:45:49,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:49,209 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:45:49,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:49,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:45:49,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:49,210 INFO L87 Difference]: Start difference. First operand 537 states and 773 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 06:45:50,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:50,024 INFO L93 Difference]: Finished difference Result 670 states and 993 transitions. [2022-03-19 06:45:50,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 06:45:50,025 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2022-03-19 06:45:50,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:50,027 INFO L225 Difference]: With dead ends: 670 [2022-03-19 06:45:50,027 INFO L226 Difference]: Without dead ends: 624 [2022-03-19 06:45:50,028 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-03-19 06:45:50,028 INFO L912 BasicCegarLoop]: 291 mSDtfsCounter, 788 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:50,028 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1040 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:45:50,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-03-19 06:45:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 529. [2022-03-19 06:45:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 394 states have (on average 1.3350253807106598) internal successors, (526), 405 states have internal predecessors, (526), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-19 06:45:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 759 transitions. [2022-03-19 06:45:50,091 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 759 transitions. Word has length 51 [2022-03-19 06:45:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:50,091 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 759 transitions. [2022-03-19 06:45:50,091 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 06:45:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 759 transitions. [2022-03-19 06:45:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-19 06:45:50,092 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:50,092 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:50,092 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-19 06:45:50,092 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:50,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:50,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1555680272, now seen corresponding path program 1 times [2022-03-19 06:45:50,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:50,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [303666697] [2022-03-19 06:45:50,093 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1555680272, now seen corresponding path program 2 times [2022-03-19 06:45:50,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:50,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235113521] [2022-03-19 06:45:50,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:50,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:50,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:50,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:50,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 06:45:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:50,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:50,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:50,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:50,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235113521] [2022-03-19 06:45:50,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235113521] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:50,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:50,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 06:45:50,219 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:50,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [303666697] [2022-03-19 06:45:50,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [303666697] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:50,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:50,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 06:45:50,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501712286] [2022-03-19 06:45:50,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:50,220 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 06:45:50,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:50,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 06:45:50,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-19 06:45:50,221 INFO L87 Difference]: Start difference. First operand 529 states and 759 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:50,936 INFO L93 Difference]: Finished difference Result 714 states and 1095 transitions. [2022-03-19 06:45:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 06:45:50,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-03-19 06:45:50,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:50,940 INFO L225 Difference]: With dead ends: 714 [2022-03-19 06:45:50,940 INFO L226 Difference]: Without dead ends: 701 [2022-03-19 06:45:50,941 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:45:50,941 INFO L912 BasicCegarLoop]: 375 mSDtfsCounter, 367 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:50,941 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 716 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:45:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-03-19 06:45:51,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 524. [2022-03-19 06:45:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 390 states have (on average 1.3307692307692307) internal successors, (519), 400 states have internal predecessors, (519), 91 states have call successors, (91), 37 states have call predecessors, (91), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-19 06:45:51,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 751 transitions. [2022-03-19 06:45:51,023 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 751 transitions. Word has length 51 [2022-03-19 06:45:51,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:51,024 INFO L478 AbstractCegarLoop]: Abstraction has 524 states and 751 transitions. [2022-03-19 06:45:51,024 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:51,024 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 751 transitions. [2022-03-19 06:45:51,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-19 06:45:51,025 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:51,025 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:51,025 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-19 06:45:51,025 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:51,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:51,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1434451436, now seen corresponding path program 1 times [2022-03-19 06:45:51,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:51,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [432887949] [2022-03-19 06:45:51,026 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:51,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1434451436, now seen corresponding path program 2 times [2022-03-19 06:45:51,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:51,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665604848] [2022-03-19 06:45:51,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:51,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 06:45:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:51,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:51,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665604848] [2022-03-19 06:45:51,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665604848] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:51,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:51,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:51,154 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:51,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [432887949] [2022-03-19 06:45:51,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [432887949] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:51,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:51,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:51,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107577310] [2022-03-19 06:45:51,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:51,154 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:45:51,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:51,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:45:51,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:51,155 INFO L87 Difference]: Start difference. First operand 524 states and 751 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:51,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:51,853 INFO L93 Difference]: Finished difference Result 547 states and 781 transitions. [2022-03-19 06:45:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 06:45:51,855 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2022-03-19 06:45:51,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:51,857 INFO L225 Difference]: With dead ends: 547 [2022-03-19 06:45:51,857 INFO L226 Difference]: Without dead ends: 543 [2022-03-19 06:45:51,858 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:45:51,858 INFO L912 BasicCegarLoop]: 253 mSDtfsCounter, 76 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:51,858 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 1341 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:45:51,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-03-19 06:45:51,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 531. [2022-03-19 06:45:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 396 states have (on average 1.3282828282828283) internal successors, (526), 407 states have internal predecessors, (526), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-03-19 06:45:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 760 transitions. [2022-03-19 06:45:51,924 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 760 transitions. Word has length 52 [2022-03-19 06:45:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:51,925 INFO L478 AbstractCegarLoop]: Abstraction has 531 states and 760 transitions. [2022-03-19 06:45:51,925 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 760 transitions. [2022-03-19 06:45:51,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-19 06:45:51,925 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:51,925 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:51,925 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-19 06:45:51,925 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:51,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1434174606, now seen corresponding path program 1 times [2022-03-19 06:45:51,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:51,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [354959251] [2022-03-19 06:45:51,926 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1434174606, now seen corresponding path program 2 times [2022-03-19 06:45:51,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:51,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444544005] [2022-03-19 06:45:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:51,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 06:45:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:52,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:52,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444544005] [2022-03-19 06:45:52,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444544005] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:52,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:52,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:52,058 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:52,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [354959251] [2022-03-19 06:45:52,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [354959251] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:52,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:52,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:52,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069811770] [2022-03-19 06:45:52,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:52,058 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:45:52,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:52,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:45:52,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:52,059 INFO L87 Difference]: Start difference. First operand 531 states and 760 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:52,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:52,554 INFO L93 Difference]: Finished difference Result 562 states and 797 transitions. [2022-03-19 06:45:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:45:52,555 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2022-03-19 06:45:52,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:52,557 INFO L225 Difference]: With dead ends: 562 [2022-03-19 06:45:52,557 INFO L226 Difference]: Without dead ends: 538 [2022-03-19 06:45:52,557 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:45:52,558 INFO L912 BasicCegarLoop]: 255 mSDtfsCounter, 138 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:52,558 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1410 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 06:45:52,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-03-19 06:45:52,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 530. [2022-03-19 06:45:52,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 395 states have (on average 1.3265822784810126) internal successors, (524), 406 states have internal predecessors, (524), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-03-19 06:45:52,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 758 transitions. [2022-03-19 06:45:52,625 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 758 transitions. Word has length 52 [2022-03-19 06:45:52,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:52,625 INFO L478 AbstractCegarLoop]: Abstraction has 530 states and 758 transitions. [2022-03-19 06:45:52,628 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:52,629 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 758 transitions. [2022-03-19 06:45:52,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-19 06:45:52,629 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:52,629 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:52,629 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-19 06:45:52,629 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:52,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:52,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1015972043, now seen corresponding path program 1 times [2022-03-19 06:45:52,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:52,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1157699376] [2022-03-19 06:45:52,630 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:52,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1015972043, now seen corresponding path program 2 times [2022-03-19 06:45:52,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:52,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703196659] [2022-03-19 06:45:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:52,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-19 06:45:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 06:45:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:52,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:52,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703196659] [2022-03-19 06:45:52,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703196659] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:52,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:52,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:52,754 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:52,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1157699376] [2022-03-19 06:45:52,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1157699376] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:52,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:52,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:52,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609259439] [2022-03-19 06:45:52,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:52,755 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:45:52,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:52,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:45:52,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:52,755 INFO L87 Difference]: Start difference. First operand 530 states and 758 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:45:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:53,181 INFO L93 Difference]: Finished difference Result 955 states and 1439 transitions. [2022-03-19 06:45:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 06:45:53,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-19 06:45:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:53,184 INFO L225 Difference]: With dead ends: 955 [2022-03-19 06:45:53,184 INFO L226 Difference]: Without dead ends: 549 [2022-03-19 06:45:53,186 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:53,187 INFO L912 BasicCegarLoop]: 258 mSDtfsCounter, 298 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:53,187 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 652 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 06:45:53,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-03-19 06:45:53,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 529. [2022-03-19 06:45:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 394 states have (on average 1.3197969543147208) internal successors, (520), 405 states have internal predecessors, (520), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-03-19 06:45:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 754 transitions. [2022-03-19 06:45:53,253 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 754 transitions. Word has length 58 [2022-03-19 06:45:53,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:53,253 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 754 transitions. [2022-03-19 06:45:53,253 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:45:53,253 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 754 transitions. [2022-03-19 06:45:53,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 06:45:53,254 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:53,254 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:53,254 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-19 06:45:53,254 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:53,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:53,254 INFO L85 PathProgramCache]: Analyzing trace with hash -72634305, now seen corresponding path program 1 times [2022-03-19 06:45:53,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:53,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1727147610] [2022-03-19 06:45:53,255 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:53,255 INFO L85 PathProgramCache]: Analyzing trace with hash -72634305, now seen corresponding path program 2 times [2022-03-19 06:45:53,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:53,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405379635] [2022-03-19 06:45:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:53,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:53,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:53,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:53,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:53,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 06:45:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:53,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:53,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:53,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405379635] [2022-03-19 06:45:53,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405379635] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:53,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:53,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:45:53,375 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:53,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1727147610] [2022-03-19 06:45:53,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1727147610] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:53,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:53,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:45:53,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248509509] [2022-03-19 06:45:53,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:53,375 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:45:53,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:53,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:45:53,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:45:53,376 INFO L87 Difference]: Start difference. First operand 529 states and 754 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:54,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:54,106 INFO L93 Difference]: Finished difference Result 675 states and 1000 transitions. [2022-03-19 06:45:54,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:45:54,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2022-03-19 06:45:54,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:54,109 INFO L225 Difference]: With dead ends: 675 [2022-03-19 06:45:54,109 INFO L226 Difference]: Without dead ends: 639 [2022-03-19 06:45:54,110 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:45:54,110 INFO L912 BasicCegarLoop]: 323 mSDtfsCounter, 756 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:54,110 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 693 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 06:45:54,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-03-19 06:45:54,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 560. [2022-03-19 06:45:54,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 415 states have (on average 1.344578313253012) internal successors, (558), 426 states have internal predecessors, (558), 101 states have call successors, (101), 37 states have call predecessors, (101), 43 states have return successors, (165), 98 states have call predecessors, (165), 94 states have call successors, (165) [2022-03-19 06:45:54,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 824 transitions. [2022-03-19 06:45:54,186 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 824 transitions. Word has length 53 [2022-03-19 06:45:54,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:54,187 INFO L478 AbstractCegarLoop]: Abstraction has 560 states and 824 transitions. [2022-03-19 06:45:54,187 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:54,187 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 824 transitions. [2022-03-19 06:45:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-19 06:45:54,187 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:54,187 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:54,187 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-19 06:45:54,188 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:54,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:54,188 INFO L85 PathProgramCache]: Analyzing trace with hash -960639770, now seen corresponding path program 1 times [2022-03-19 06:45:54,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:54,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1128900728] [2022-03-19 06:45:54,188 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:54,188 INFO L85 PathProgramCache]: Analyzing trace with hash -960639770, now seen corresponding path program 2 times [2022-03-19 06:45:54,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:54,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265280103] [2022-03-19 06:45:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:54,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:54,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:54,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:54,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:54,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-19 06:45:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:54,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:54,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:54,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:54,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265280103] [2022-03-19 06:45:54,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265280103] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:54,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:54,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:54,368 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:54,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1128900728] [2022-03-19 06:45:54,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1128900728] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:54,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:54,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:54,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860956331] [2022-03-19 06:45:54,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:54,369 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 06:45:54,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:54,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 06:45:54,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:45:54,370 INFO L87 Difference]: Start difference. First operand 560 states and 824 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:45:54,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:54,853 INFO L93 Difference]: Finished difference Result 856 states and 1268 transitions. [2022-03-19 06:45:54,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 06:45:54,853 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2022-03-19 06:45:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:54,857 INFO L225 Difference]: With dead ends: 856 [2022-03-19 06:45:54,857 INFO L226 Difference]: Without dead ends: 390 [2022-03-19 06:45:54,859 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:45:54,860 INFO L912 BasicCegarLoop]: 240 mSDtfsCounter, 200 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:54,861 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1417 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 06:45:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-19 06:45:54,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 338. [2022-03-19 06:45:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 246 states have (on average 1.2560975609756098) internal successors, (309), 254 states have internal predecessors, (309), 59 states have call successors, (59), 31 states have call predecessors, (59), 32 states have return successors, (74), 54 states have call predecessors, (74), 53 states have call successors, (74) [2022-03-19 06:45:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 442 transitions. [2022-03-19 06:45:54,921 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 442 transitions. Word has length 62 [2022-03-19 06:45:54,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:54,921 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 442 transitions. [2022-03-19 06:45:54,921 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:45:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 442 transitions. [2022-03-19 06:45:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-19 06:45:54,921 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:54,921 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:54,921 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-19 06:45:54,922 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:54,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:54,922 INFO L85 PathProgramCache]: Analyzing trace with hash -293536386, now seen corresponding path program 1 times [2022-03-19 06:45:54,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:54,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1925088396] [2022-03-19 06:45:54,922 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:54,922 INFO L85 PathProgramCache]: Analyzing trace with hash -293536386, now seen corresponding path program 2 times [2022-03-19 06:45:54,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:54,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174009753] [2022-03-19 06:45:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:54,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:54,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:55,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:55,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 06:45:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:55,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:55,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:55,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:55,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174009753] [2022-03-19 06:45:55,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174009753] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:55,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:55,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 06:45:55,121 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:55,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1925088396] [2022-03-19 06:45:55,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1925088396] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:55,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:55,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 06:45:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085360548] [2022-03-19 06:45:55,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:55,122 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 06:45:55,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:55,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 06:45:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-19 06:45:55,123 INFO L87 Difference]: Start difference. First operand 338 states and 442 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:45:55,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:55,883 INFO L93 Difference]: Finished difference Result 346 states and 454 transitions. [2022-03-19 06:45:55,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:45:55,883 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-19 06:45:55,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:55,885 INFO L225 Difference]: With dead ends: 346 [2022-03-19 06:45:55,885 INFO L226 Difference]: Without dead ends: 304 [2022-03-19 06:45:55,885 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:45:55,886 INFO L912 BasicCegarLoop]: 227 mSDtfsCounter, 155 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:55,886 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 1486 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:45:55,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-03-19 06:45:55,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2022-03-19 06:45:55,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 214 states have (on average 1.2757009345794392) internal successors, (273), 220 states have internal predecessors, (273), 55 states have call successors, (55), 28 states have call predecessors, (55), 28 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-03-19 06:45:55,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 398 transitions. [2022-03-19 06:45:55,929 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 398 transitions. Word has length 58 [2022-03-19 06:45:55,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:55,929 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 398 transitions. [2022-03-19 06:45:55,929 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:45:55,930 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 398 transitions. [2022-03-19 06:45:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-19 06:45:55,930 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:55,930 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:55,930 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-19 06:45:55,930 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:55,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:55,930 INFO L85 PathProgramCache]: Analyzing trace with hash 476480639, now seen corresponding path program 1 times [2022-03-19 06:45:55,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:55,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1742070755] [2022-03-19 06:45:55,931 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:55,931 INFO L85 PathProgramCache]: Analyzing trace with hash 476480639, now seen corresponding path program 2 times [2022-03-19 06:45:55,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:55,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079512876] [2022-03-19 06:45:55,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:55,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:55,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:56,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:56,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-19 06:45:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:56,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:45:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:56,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:56,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:56,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079512876] [2022-03-19 06:45:56,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079512876] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:56,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:56,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:56,093 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:56,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1742070755] [2022-03-19 06:45:56,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1742070755] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:56,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:56,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:56,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863894250] [2022-03-19 06:45:56,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:56,094 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:45:56,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:56,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:45:56,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:56,094 INFO L87 Difference]: Start difference. First operand 298 states and 398 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:45:56,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:56,876 INFO L93 Difference]: Finished difference Result 576 states and 798 transitions. [2022-03-19 06:45:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:45:56,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-03-19 06:45:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:56,879 INFO L225 Difference]: With dead ends: 576 [2022-03-19 06:45:56,879 INFO L226 Difference]: Without dead ends: 316 [2022-03-19 06:45:56,880 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-03-19 06:45:56,880 INFO L912 BasicCegarLoop]: 200 mSDtfsCounter, 252 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:56,881 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 830 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:45:56,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-03-19 06:45:56,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2022-03-19 06:45:56,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 214 states have (on average 1.266355140186916) internal successors, (271), 220 states have internal predecessors, (271), 55 states have call successors, (55), 28 states have call predecessors, (55), 28 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-03-19 06:45:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 396 transitions. [2022-03-19 06:45:56,924 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 396 transitions. Word has length 66 [2022-03-19 06:45:56,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:56,924 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 396 transitions. [2022-03-19 06:45:56,925 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:45:56,925 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 396 transitions. [2022-03-19 06:45:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-19 06:45:56,925 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:56,925 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:56,925 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-19 06:45:56,925 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:56,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:56,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1991566019, now seen corresponding path program 1 times [2022-03-19 06:45:56,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:56,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1157860532] [2022-03-19 06:45:56,926 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1991566019, now seen corresponding path program 2 times [2022-03-19 06:45:56,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:56,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314655174] [2022-03-19 06:45:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:56,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-19 06:45:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:45:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:57,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:57,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314655174] [2022-03-19 06:45:57,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314655174] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:57,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:57,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:57,089 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:57,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1157860532] [2022-03-19 06:45:57,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1157860532] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:57,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:57,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:57,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963990435] [2022-03-19 06:45:57,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:57,090 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:45:57,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:45:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:57,091 INFO L87 Difference]: Start difference. First operand 298 states and 396 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 06:45:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:57,396 INFO L93 Difference]: Finished difference Result 591 states and 822 transitions. [2022-03-19 06:45:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 06:45:57,396 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-19 06:45:57,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:57,398 INFO L225 Difference]: With dead ends: 591 [2022-03-19 06:45:57,398 INFO L226 Difference]: Without dead ends: 330 [2022-03-19 06:45:57,400 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:45:57,404 INFO L912 BasicCegarLoop]: 214 mSDtfsCounter, 183 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:57,405 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1025 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-19 06:45:57,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-03-19 06:45:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 303. [2022-03-19 06:45:57,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 218 states have (on average 1.261467889908257) internal successors, (275), 224 states have internal predecessors, (275), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (79), 51 states have call predecessors, (79), 50 states have call successors, (79) [2022-03-19 06:45:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 409 transitions. [2022-03-19 06:45:57,450 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 409 transitions. Word has length 69 [2022-03-19 06:45:57,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:57,450 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 409 transitions. [2022-03-19 06:45:57,450 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 06:45:57,450 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 409 transitions. [2022-03-19 06:45:57,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-19 06:45:57,450 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:57,451 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:57,451 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-19 06:45:57,451 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:57,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:57,451 INFO L85 PathProgramCache]: Analyzing trace with hash 437736013, now seen corresponding path program 1 times [2022-03-19 06:45:57,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:57,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1321115271] [2022-03-19 06:45:57,451 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:57,451 INFO L85 PathProgramCache]: Analyzing trace with hash 437736013, now seen corresponding path program 2 times [2022-03-19 06:45:57,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:57,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818064366] [2022-03-19 06:45:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:57,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-19 06:45:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:45:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:57,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:57,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818064366] [2022-03-19 06:45:57,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818064366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:57,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:57,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:45:57,558 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:57,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1321115271] [2022-03-19 06:45:57,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1321115271] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:57,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:57,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:45:57,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575693140] [2022-03-19 06:45:57,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:57,558 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:45:57,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:57,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:45:57,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:45:57,559 INFO L87 Difference]: Start difference. First operand 303 states and 409 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 06:45:57,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:57,954 INFO L93 Difference]: Finished difference Result 477 states and 678 transitions. [2022-03-19 06:45:57,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 06:45:57,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-19 06:45:57,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:57,957 INFO L225 Difference]: With dead ends: 477 [2022-03-19 06:45:57,957 INFO L226 Difference]: Without dead ends: 474 [2022-03-19 06:45:57,957 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:57,958 INFO L912 BasicCegarLoop]: 306 mSDtfsCounter, 283 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:57,958 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 755 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 06:45:57,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-03-19 06:45:58,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 307. [2022-03-19 06:45:58,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 222 states have (on average 1.2657657657657657) internal successors, (281), 228 states have internal predecessors, (281), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (79), 51 states have call predecessors, (79), 50 states have call successors, (79) [2022-03-19 06:45:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 415 transitions. [2022-03-19 06:45:58,008 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 415 transitions. Word has length 69 [2022-03-19 06:45:58,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:58,008 INFO L478 AbstractCegarLoop]: Abstraction has 307 states and 415 transitions. [2022-03-19 06:45:58,008 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 06:45:58,008 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 415 transitions. [2022-03-19 06:45:58,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-19 06:45:58,008 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:58,009 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:58,009 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-19 06:45:58,009 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:58,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash 447050566, now seen corresponding path program 1 times [2022-03-19 06:45:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:58,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [937911998] [2022-03-19 06:45:58,009 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash 447050566, now seen corresponding path program 2 times [2022-03-19 06:45:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:58,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044297122] [2022-03-19 06:45:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:58,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-19 06:45:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:45:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:58,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:58,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044297122] [2022-03-19 06:45:58,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044297122] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:58,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:58,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:45:58,147 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:58,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [937911998] [2022-03-19 06:45:58,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [937911998] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:58,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:58,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:45:58,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773303904] [2022-03-19 06:45:58,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:58,147 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:45:58,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:58,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:45:58,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:45:58,148 INFO L87 Difference]: Start difference. First operand 307 states and 415 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:45:58,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:58,582 INFO L93 Difference]: Finished difference Result 793 states and 1161 transitions. [2022-03-19 06:45:58,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 06:45:58,582 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-03-19 06:45:58,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:58,598 INFO L225 Difference]: With dead ends: 793 [2022-03-19 06:45:58,598 INFO L226 Difference]: Without dead ends: 529 [2022-03-19 06:45:58,600 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:45:58,600 INFO L912 BasicCegarLoop]: 233 mSDtfsCounter, 493 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:58,600 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 06:45:58,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-03-19 06:45:58,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 490. [2022-03-19 06:45:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 357 states have (on average 1.2913165266106443) internal successors, (461), 366 states have internal predecessors, (461), 89 states have call successors, (89), 35 states have call predecessors, (89), 43 states have return successors, (153), 89 states have call predecessors, (153), 85 states have call successors, (153) [2022-03-19 06:45:58,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 703 transitions. [2022-03-19 06:45:58,677 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 703 transitions. Word has length 70 [2022-03-19 06:45:58,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:58,678 INFO L478 AbstractCegarLoop]: Abstraction has 490 states and 703 transitions. [2022-03-19 06:45:58,678 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:45:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 703 transitions. [2022-03-19 06:45:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-19 06:45:58,678 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:58,678 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:58,678 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-19 06:45:58,678 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1436145557, now seen corresponding path program 1 times [2022-03-19 06:45:58,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:58,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [165995123] [2022-03-19 06:45:58,679 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1436145557, now seen corresponding path program 2 times [2022-03-19 06:45:58,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:58,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379447756] [2022-03-19 06:45:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:58,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-19 06:45:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:45:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:45:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:58,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:58,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379447756] [2022-03-19 06:45:58,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379447756] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:58,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:58,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:58,847 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:58,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [165995123] [2022-03-19 06:45:58,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [165995123] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:58,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:58,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:58,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447446252] [2022-03-19 06:45:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:58,848 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 06:45:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 06:45:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:45:58,848 INFO L87 Difference]: Start difference. First operand 490 states and 703 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 06:45:59,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:59,320 INFO L93 Difference]: Finished difference Result 942 states and 1393 transitions. [2022-03-19 06:45:59,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 06:45:59,321 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2022-03-19 06:45:59,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:59,324 INFO L225 Difference]: With dead ends: 942 [2022-03-19 06:45:59,324 INFO L226 Difference]: Without dead ends: 493 [2022-03-19 06:45:59,326 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:45:59,326 INFO L912 BasicCegarLoop]: 227 mSDtfsCounter, 107 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:59,327 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1126 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 06:45:59,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-03-19 06:45:59,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 484. [2022-03-19 06:45:59,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 353 states have (on average 1.2832861189801699) internal successors, (453), 361 states have internal predecessors, (453), 88 states have call successors, (88), 35 states have call predecessors, (88), 42 states have return successors, (146), 88 states have call predecessors, (146), 84 states have call successors, (146) [2022-03-19 06:45:59,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 687 transitions. [2022-03-19 06:45:59,416 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 687 transitions. Word has length 72 [2022-03-19 06:45:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:59,416 INFO L478 AbstractCegarLoop]: Abstraction has 484 states and 687 transitions. [2022-03-19 06:45:59,416 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 06:45:59,416 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 687 transitions. [2022-03-19 06:45:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-19 06:45:59,417 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:59,417 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:45:59,417 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-19 06:45:59,417 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:59,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:59,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1927869214, now seen corresponding path program 1 times [2022-03-19 06:45:59,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:59,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1669390100] [2022-03-19 06:45:59,418 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1927869214, now seen corresponding path program 2 times [2022-03-19 06:45:59,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:59,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263720400] [2022-03-19 06:45:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:59,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:59,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:59,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:59,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:59,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-19 06:45:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:59,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:45:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:59,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:45:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:59,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:45:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:59,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 06:45:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:59,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:59,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263720400] [2022-03-19 06:45:59,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263720400] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:59,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:59,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:59,575 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:59,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1669390100] [2022-03-19 06:45:59,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1669390100] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:59,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:59,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:59,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967530454] [2022-03-19 06:45:59,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:59,576 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:45:59,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:59,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:45:59,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:59,576 INFO L87 Difference]: Start difference. First operand 484 states and 687 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 06:46:00,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:00,062 INFO L93 Difference]: Finished difference Result 869 states and 1255 transitions. [2022-03-19 06:46:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 06:46:00,063 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-03-19 06:46:00,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:00,065 INFO L225 Difference]: With dead ends: 869 [2022-03-19 06:46:00,066 INFO L226 Difference]: Without dead ends: 450 [2022-03-19 06:46:00,067 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-03-19 06:46:00,068 INFO L912 BasicCegarLoop]: 313 mSDtfsCounter, 337 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:00,068 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 956 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 06:46:00,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-19 06:46:00,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 436. [2022-03-19 06:46:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 320 states have (on average 1.296875) internal successors, (415), 329 states have internal predecessors, (415), 79 states have call successors, (79), 33 states have call predecessors, (79), 36 states have return successors, (110), 74 states have call predecessors, (110), 75 states have call successors, (110) [2022-03-19 06:46:00,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 604 transitions. [2022-03-19 06:46:00,135 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 604 transitions. Word has length 83 [2022-03-19 06:46:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:00,136 INFO L478 AbstractCegarLoop]: Abstraction has 436 states and 604 transitions. [2022-03-19 06:46:00,136 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 06:46:00,136 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 604 transitions. [2022-03-19 06:46:00,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-19 06:46:00,136 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:00,136 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:00,137 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-19 06:46:00,137 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:00,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:00,137 INFO L85 PathProgramCache]: Analyzing trace with hash -770629812, now seen corresponding path program 1 times [2022-03-19 06:46:00,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:00,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [956340507] [2022-03-19 06:46:00,137 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:00,137 INFO L85 PathProgramCache]: Analyzing trace with hash -770629812, now seen corresponding path program 2 times [2022-03-19 06:46:00,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:00,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491068772] [2022-03-19 06:46:00,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:00,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 06:46:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 06:46:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:00,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:00,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491068772] [2022-03-19 06:46:00,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491068772] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:00,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:00,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-19 06:46:00,481 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:00,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [956340507] [2022-03-19 06:46:00,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [956340507] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:00,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:00,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-19 06:46:00,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167746540] [2022-03-19 06:46:00,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:00,481 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-19 06:46:00,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:00,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-19 06:46:00,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-03-19 06:46:00,482 INFO L87 Difference]: Start difference. First operand 436 states and 604 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-19 06:46:01,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:01,154 INFO L93 Difference]: Finished difference Result 486 states and 681 transitions. [2022-03-19 06:46:01,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 06:46:01,154 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-03-19 06:46:01,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:01,156 INFO L225 Difference]: With dead ends: 486 [2022-03-19 06:46:01,156 INFO L226 Difference]: Without dead ends: 461 [2022-03-19 06:46:01,157 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-19 06:46:01,157 INFO L912 BasicCegarLoop]: 230 mSDtfsCounter, 147 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:01,157 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 2598 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:46:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-03-19 06:46:01,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 447. [2022-03-19 06:46:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 329 states have (on average 1.2887537993920972) internal successors, (424), 339 states have internal predecessors, (424), 79 states have call successors, (79), 33 states have call predecessors, (79), 38 states have return successors, (116), 75 states have call predecessors, (116), 75 states have call successors, (116) [2022-03-19 06:46:01,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 619 transitions. [2022-03-19 06:46:01,226 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 619 transitions. Word has length 92 [2022-03-19 06:46:01,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:01,226 INFO L478 AbstractCegarLoop]: Abstraction has 447 states and 619 transitions. [2022-03-19 06:46:01,226 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-19 06:46:01,227 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 619 transitions. [2022-03-19 06:46:01,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-19 06:46:01,228 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:01,228 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:01,228 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-19 06:46:01,228 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:01,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:01,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1033506351, now seen corresponding path program 1 times [2022-03-19 06:46:01,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:01,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [209920255] [2022-03-19 06:46:01,228 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:01,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1033506351, now seen corresponding path program 2 times [2022-03-19 06:46:01,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:01,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398045696] [2022-03-19 06:46:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:01,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 06:46:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 06:46:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:01,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:01,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398045696] [2022-03-19 06:46:01,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398045696] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:01,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:01,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-19 06:46:01,563 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:01,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [209920255] [2022-03-19 06:46:01,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [209920255] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:01,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:01,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-19 06:46:01,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722335280] [2022-03-19 06:46:01,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:01,564 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-19 06:46:01,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:01,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-19 06:46:01,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-03-19 06:46:01,564 INFO L87 Difference]: Start difference. First operand 447 states and 619 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-19 06:46:02,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:02,292 INFO L93 Difference]: Finished difference Result 484 states and 677 transitions. [2022-03-19 06:46:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 06:46:02,293 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-03-19 06:46:02,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:02,295 INFO L225 Difference]: With dead ends: 484 [2022-03-19 06:46:02,295 INFO L226 Difference]: Without dead ends: 459 [2022-03-19 06:46:02,296 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-19 06:46:02,296 INFO L912 BasicCegarLoop]: 245 mSDtfsCounter, 121 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:02,296 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 2822 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:46:02,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-03-19 06:46:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2022-03-19 06:46:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 319 states have (on average 1.297805642633229) internal successors, (414), 328 states have internal predecessors, (414), 78 states have call successors, (78), 33 states have call predecessors, (78), 36 states have return successors, (108), 73 states have call predecessors, (108), 74 states have call successors, (108) [2022-03-19 06:46:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 600 transitions. [2022-03-19 06:46:02,375 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 600 transitions. Word has length 93 [2022-03-19 06:46:02,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:02,375 INFO L478 AbstractCegarLoop]: Abstraction has 434 states and 600 transitions. [2022-03-19 06:46:02,375 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-19 06:46:02,375 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 600 transitions. [2022-03-19 06:46:02,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-19 06:46:02,376 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:02,376 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:02,376 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-19 06:46:02,376 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:02,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:02,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1724660735, now seen corresponding path program 1 times [2022-03-19 06:46:02,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:02,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1087986642] [2022-03-19 06:46:02,377 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:02,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1724660735, now seen corresponding path program 2 times [2022-03-19 06:46:02,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:02,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173694837] [2022-03-19 06:46:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:02,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 06:46:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 06:46:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-19 06:46:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:02,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:02,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173694837] [2022-03-19 06:46:02,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173694837] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:02,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:02,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-19 06:46:02,770 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:02,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1087986642] [2022-03-19 06:46:02,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1087986642] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:02,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:02,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-19 06:46:02,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352581884] [2022-03-19 06:46:02,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:02,770 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-19 06:46:02,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:02,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-19 06:46:02,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-03-19 06:46:02,771 INFO L87 Difference]: Start difference. First operand 434 states and 600 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-19 06:46:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:04,165 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2022-03-19 06:46:04,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-19 06:46:04,165 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 103 [2022-03-19 06:46:04,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:04,167 INFO L225 Difference]: With dead ends: 470 [2022-03-19 06:46:04,167 INFO L226 Difference]: Without dead ends: 434 [2022-03-19 06:46:04,168 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=1357, Unknown=0, NotChecked=0, Total=1560 [2022-03-19 06:46:04,168 INFO L912 BasicCegarLoop]: 210 mSDtfsCounter, 395 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 3168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:04,168 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 810 Invalid, 3168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-19 06:46:04,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-03-19 06:46:04,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 424. [2022-03-19 06:46:04,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 313 states have (on average 1.3003194888178913) internal successors, (407), 322 states have internal predecessors, (407), 75 states have call successors, (75), 32 states have call predecessors, (75), 35 states have return successors, (105), 70 states have call predecessors, (105), 71 states have call successors, (105) [2022-03-19 06:46:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 587 transitions. [2022-03-19 06:46:04,238 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 587 transitions. Word has length 103 [2022-03-19 06:46:04,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:04,238 INFO L478 AbstractCegarLoop]: Abstraction has 424 states and 587 transitions. [2022-03-19 06:46:04,239 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-19 06:46:04,239 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 587 transitions. [2022-03-19 06:46:04,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-19 06:46:04,239 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:04,239 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:04,240 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-19 06:46:04,240 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:04,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:04,240 INFO L85 PathProgramCache]: Analyzing trace with hash 56143006, now seen corresponding path program 1 times [2022-03-19 06:46:04,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:04,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1727689904] [2022-03-19 06:46:04,240 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:04,240 INFO L85 PathProgramCache]: Analyzing trace with hash 56143006, now seen corresponding path program 2 times [2022-03-19 06:46:04,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:04,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861987965] [2022-03-19 06:46:04,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:04,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 06:46:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:46:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 06:46:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-19 06:46:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-19 06:46:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:04,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:04,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861987965] [2022-03-19 06:46:04,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861987965] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:04,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:04,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-19 06:46:04,647 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:04,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1727689904] [2022-03-19 06:46:04,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1727689904] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:04,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:04,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-19 06:46:04,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724926436] [2022-03-19 06:46:04,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:04,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-19 06:46:04,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:04,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-19 06:46:04,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-19 06:46:04,650 INFO L87 Difference]: Start difference. First operand 424 states and 587 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 06:46:05,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:05,694 INFO L93 Difference]: Finished difference Result 481 states and 679 transitions. [2022-03-19 06:46:05,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-19 06:46:05,694 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2022-03-19 06:46:05,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:05,697 INFO L225 Difference]: With dead ends: 481 [2022-03-19 06:46:05,697 INFO L226 Difference]: Without dead ends: 454 [2022-03-19 06:46:05,697 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-03-19 06:46:05,698 INFO L912 BasicCegarLoop]: 200 mSDtfsCounter, 121 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:05,698 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 2146 Invalid, 2219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 06:46:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-03-19 06:46:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 440. [2022-03-19 06:46:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 324 states have (on average 1.2901234567901234) internal successors, (418), 334 states have internal predecessors, (418), 78 states have call successors, (78), 32 states have call predecessors, (78), 37 states have return successors, (114), 74 states have call predecessors, (114), 73 states have call successors, (114) [2022-03-19 06:46:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 610 transitions. [2022-03-19 06:46:05,770 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 610 transitions. Word has length 108 [2022-03-19 06:46:05,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:05,770 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 610 transitions. [2022-03-19 06:46:05,770 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 06:46:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 610 transitions. [2022-03-19 06:46:05,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-19 06:46:05,771 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:05,771 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:05,771 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-19 06:46:05,771 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:05,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1819064313, now seen corresponding path program 1 times [2022-03-19 06:46:05,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:05,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [600277056] [2022-03-19 06:46:05,772 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:05,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1819064313, now seen corresponding path program 2 times [2022-03-19 06:46:05,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:05,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627594316] [2022-03-19 06:46:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:05,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:05,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:05,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:05,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 06:46:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:05,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:46:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:05,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 06:46:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 06:46:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 06:46:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:06,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:06,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627594316] [2022-03-19 06:46:06,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627594316] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:06,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:06,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-19 06:46:06,160 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:06,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [600277056] [2022-03-19 06:46:06,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [600277056] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:06,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:06,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-19 06:46:06,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546720638] [2022-03-19 06:46:06,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:06,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-19 06:46:06,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:06,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-19 06:46:06,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-19 06:46:06,161 INFO L87 Difference]: Start difference. First operand 440 states and 610 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 06:46:07,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:07,036 INFO L93 Difference]: Finished difference Result 483 states and 677 transitions. [2022-03-19 06:46:07,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-19 06:46:07,036 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2022-03-19 06:46:07,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:07,038 INFO L225 Difference]: With dead ends: 483 [2022-03-19 06:46:07,038 INFO L226 Difference]: Without dead ends: 443 [2022-03-19 06:46:07,039 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-03-19 06:46:07,039 INFO L912 BasicCegarLoop]: 238 mSDtfsCounter, 199 mSDsluCounter, 2305 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:07,039 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 2543 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:46:07,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-03-19 06:46:07,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 413. [2022-03-19 06:46:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 304 states have (on average 1.2664473684210527) internal successors, (385), 312 states have internal predecessors, (385), 75 states have call successors, (75), 32 states have call predecessors, (75), 33 states have return successors, (97), 69 states have call predecessors, (97), 70 states have call successors, (97) [2022-03-19 06:46:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 557 transitions. [2022-03-19 06:46:07,107 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 557 transitions. Word has length 109 [2022-03-19 06:46:07,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:07,107 INFO L478 AbstractCegarLoop]: Abstraction has 413 states and 557 transitions. [2022-03-19 06:46:07,108 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 06:46:07,108 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 557 transitions. [2022-03-19 06:46:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-19 06:46:07,108 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:07,109 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:07,109 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-19 06:46:07,109 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:07,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:07,109 INFO L85 PathProgramCache]: Analyzing trace with hash -636706815, now seen corresponding path program 1 times [2022-03-19 06:46:07,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:07,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [454590537] [2022-03-19 06:46:07,110 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:07,110 INFO L85 PathProgramCache]: Analyzing trace with hash -636706815, now seen corresponding path program 2 times [2022-03-19 06:46:07,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:07,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839300097] [2022-03-19 06:46:07,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:07,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-19 06:46:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-19 06:46:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 06:46:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 06:46:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-19 06:46:07,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:07,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839300097] [2022-03-19 06:46:07,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839300097] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:07,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:07,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 06:46:07,295 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:07,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [454590537] [2022-03-19 06:46:07,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [454590537] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:07,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:07,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 06:46:07,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845946574] [2022-03-19 06:46:07,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:07,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 06:46:07,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:07,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 06:46:07,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-19 06:46:07,296 INFO L87 Difference]: Start difference. First operand 413 states and 557 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-19 06:46:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:07,881 INFO L93 Difference]: Finished difference Result 734 states and 984 transitions. [2022-03-19 06:46:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 06:46:07,881 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 121 [2022-03-19 06:46:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:07,883 INFO L225 Difference]: With dead ends: 734 [2022-03-19 06:46:07,883 INFO L226 Difference]: Without dead ends: 420 [2022-03-19 06:46:07,884 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:46:07,884 INFO L912 BasicCegarLoop]: 217 mSDtfsCounter, 99 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:07,884 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 1131 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:46:07,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-19 06:46:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 408. [2022-03-19 06:46:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 302 states have (on average 1.2483443708609272) internal successors, (377), 309 states have internal predecessors, (377), 71 states have call successors, (71), 32 states have call predecessors, (71), 34 states have return successors, (92), 67 states have call predecessors, (92), 66 states have call successors, (92) [2022-03-19 06:46:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 540 transitions. [2022-03-19 06:46:07,949 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 540 transitions. Word has length 121 [2022-03-19 06:46:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:07,949 INFO L478 AbstractCegarLoop]: Abstraction has 408 states and 540 transitions. [2022-03-19 06:46:07,949 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-19 06:46:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 540 transitions. [2022-03-19 06:46:07,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-19 06:46:07,950 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:07,950 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:07,950 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-19 06:46:07,950 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1406877123, now seen corresponding path program 1 times [2022-03-19 06:46:07,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:07,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1688316199] [2022-03-19 06:46:07,951 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:07,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1406877123, now seen corresponding path program 2 times [2022-03-19 06:46:07,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:07,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106033195] [2022-03-19 06:46:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:07,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-19 06:46:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-19 06:46:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 06:46:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 06:46:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-19 06:46:08,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:08,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106033195] [2022-03-19 06:46:08,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106033195] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:08,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:08,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 06:46:08,136 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:08,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1688316199] [2022-03-19 06:46:08,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1688316199] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:08,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:08,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 06:46:08,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873279043] [2022-03-19 06:46:08,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:08,136 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 06:46:08,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 06:46:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-19 06:46:08,137 INFO L87 Difference]: Start difference. First operand 408 states and 540 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-19 06:46:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:08,599 INFO L93 Difference]: Finished difference Result 592 states and 836 transitions. [2022-03-19 06:46:08,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 06:46:08,599 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2022-03-19 06:46:08,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:08,602 INFO L225 Difference]: With dead ends: 592 [2022-03-19 06:46:08,602 INFO L226 Difference]: Without dead ends: 547 [2022-03-19 06:46:08,603 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:46:08,603 INFO L912 BasicCegarLoop]: 255 mSDtfsCounter, 217 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:08,603 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 1249 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 06:46:08,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-03-19 06:46:08,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 399. [2022-03-19 06:46:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 294 states have (on average 1.248299319727891) internal successors, (367), 301 states have internal predecessors, (367), 71 states have call successors, (71), 32 states have call predecessors, (71), 33 states have return successors, (91), 66 states have call predecessors, (91), 66 states have call successors, (91) [2022-03-19 06:46:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 529 transitions. [2022-03-19 06:46:08,672 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 529 transitions. Word has length 122 [2022-03-19 06:46:08,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:08,672 INFO L478 AbstractCegarLoop]: Abstraction has 399 states and 529 transitions. [2022-03-19 06:46:08,672 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-19 06:46:08,672 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 529 transitions. [2022-03-19 06:46:08,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-03-19 06:46:08,673 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:08,673 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:08,673 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-19 06:46:08,673 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:08,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:08,674 INFO L85 PathProgramCache]: Analyzing trace with hash 359745241, now seen corresponding path program 1 times [2022-03-19 06:46:08,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:08,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [346911104] [2022-03-19 06:46:08,674 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:08,674 INFO L85 PathProgramCache]: Analyzing trace with hash 359745241, now seen corresponding path program 2 times [2022-03-19 06:46:08,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:08,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157782728] [2022-03-19 06:46:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:08,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 06:46:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:46:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 06:46:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-19 06:46:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-19 06:46:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 06:46:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:09,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:09,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157782728] [2022-03-19 06:46:09,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157782728] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:09,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:09,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-19 06:46:09,087 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:09,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [346911104] [2022-03-19 06:46:09,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [346911104] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:09,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:09,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-19 06:46:09,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124405892] [2022-03-19 06:46:09,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:09,088 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-19 06:46:09,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:09,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-19 06:46:09,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-03-19 06:46:09,090 INFO L87 Difference]: Start difference. First operand 399 states and 529 transitions. Second operand has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-19 06:46:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:10,310 INFO L93 Difference]: Finished difference Result 416 states and 551 transitions. [2022-03-19 06:46:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-19 06:46:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 119 [2022-03-19 06:46:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:10,312 INFO L225 Difference]: With dead ends: 416 [2022-03-19 06:46:10,312 INFO L226 Difference]: Without dead ends: 354 [2022-03-19 06:46:10,312 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=262, Invalid=1718, Unknown=0, NotChecked=0, Total=1980 [2022-03-19 06:46:10,313 INFO L912 BasicCegarLoop]: 178 mSDtfsCounter, 476 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:10,313 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 481 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 2616 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-19 06:46:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-19 06:46:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 341. [2022-03-19 06:46:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 250 states have (on average 1.18) internal successors, (295), 255 states have internal predecessors, (295), 64 states have call successors, (64), 29 states have call predecessors, (64), 26 states have return successors, (77), 56 states have call predecessors, (77), 58 states have call successors, (77) [2022-03-19 06:46:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 436 transitions. [2022-03-19 06:46:10,374 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 436 transitions. Word has length 119 [2022-03-19 06:46:10,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:10,374 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 436 transitions. [2022-03-19 06:46:10,375 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-19 06:46:10,375 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 436 transitions. [2022-03-19 06:46:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-03-19 06:46:10,376 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:10,376 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:10,376 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-19 06:46:10,376 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:10,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1772031017, now seen corresponding path program 1 times [2022-03-19 06:46:10,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:10,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [206821194] [2022-03-19 06:46:10,377 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:10,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1772031017, now seen corresponding path program 2 times [2022-03-19 06:46:10,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:10,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751012904] [2022-03-19 06:46:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:10,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-19 06:46:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-19 06:46:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 06:46:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 06:46:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 06:46:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 06:46:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-19 06:46:10,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:10,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751012904] [2022-03-19 06:46:10,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751012904] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:46:10,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607537018] [2022-03-19 06:46:10,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 06:46:10,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:46:10,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:46:10,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:46:10,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 06:46:10,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 06:46:10,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:46:10,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-19 06:46:10,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:46:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-19 06:46:11,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 06:46:11,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607537018] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:11,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 06:46:11,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-03-19 06:46:11,062 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:11,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [206821194] [2022-03-19 06:46:11,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [206821194] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:11,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:11,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:46:11,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169174955] [2022-03-19 06:46:11,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:11,062 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:46:11,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:11,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:46:11,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:46:11,063 INFO L87 Difference]: Start difference. First operand 341 states and 436 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 06:46:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:11,253 INFO L93 Difference]: Finished difference Result 373 states and 477 transitions. [2022-03-19 06:46:11,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:46:11,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 163 [2022-03-19 06:46:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:11,255 INFO L225 Difference]: With dead ends: 373 [2022-03-19 06:46:11,255 INFO L226 Difference]: Without dead ends: 362 [2022-03-19 06:46:11,255 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-19 06:46:11,256 INFO L912 BasicCegarLoop]: 196 mSDtfsCounter, 14 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:11,256 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 934 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 06:46:11,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-03-19 06:46:11,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 343. [2022-03-19 06:46:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 252 states have (on average 1.1785714285714286) internal successors, (297), 257 states have internal predecessors, (297), 64 states have call successors, (64), 29 states have call predecessors, (64), 26 states have return successors, (77), 56 states have call predecessors, (77), 58 states have call successors, (77) [2022-03-19 06:46:11,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 438 transitions. [2022-03-19 06:46:11,355 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 438 transitions. Word has length 163 [2022-03-19 06:46:11,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:11,355 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 438 transitions. [2022-03-19 06:46:11,355 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 06:46:11,355 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 438 transitions. [2022-03-19 06:46:11,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-03-19 06:46:11,356 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:11,356 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:11,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-19 06:46:11,571 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:46:11,571 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:11,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:11,572 INFO L85 PathProgramCache]: Analyzing trace with hash 422140520, now seen corresponding path program 1 times [2022-03-19 06:46:11,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:11,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [244639087] [2022-03-19 06:46:11,572 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:11,572 INFO L85 PathProgramCache]: Analyzing trace with hash 422140520, now seen corresponding path program 2 times [2022-03-19 06:46:11,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:11,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564590049] [2022-03-19 06:46:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:11,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-19 06:46:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-19 06:46:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 06:46:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 06:46:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 06:46:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 06:46:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-19 06:46:11,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:11,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564590049] [2022-03-19 06:46:11,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564590049] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:46:11,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666843219] [2022-03-19 06:46:11,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 06:46:11,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:46:11,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:46:11,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:46:11,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 06:46:11,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 06:46:11,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:46:11,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-19 06:46:11,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:46:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-19 06:46:12,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 06:46:12,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666843219] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:12,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 06:46:12,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-03-19 06:46:12,145 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:12,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [244639087] [2022-03-19 06:46:12,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [244639087] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:12,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:12,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:46:12,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948384102] [2022-03-19 06:46:12,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:12,145 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:46:12,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:12,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:46:12,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:46:12,146 INFO L87 Difference]: Start difference. First operand 343 states and 438 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 06:46:12,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:12,227 INFO L93 Difference]: Finished difference Result 611 states and 782 transitions. [2022-03-19 06:46:12,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:46:12,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 163 [2022-03-19 06:46:12,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:12,229 INFO L225 Difference]: With dead ends: 611 [2022-03-19 06:46:12,229 INFO L226 Difference]: Without dead ends: 398 [2022-03-19 06:46:12,230 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-19 06:46:12,230 INFO L912 BasicCegarLoop]: 218 mSDtfsCounter, 30 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:12,230 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1038 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 06:46:12,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-03-19 06:46:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 325. [2022-03-19 06:46:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 238 states have (on average 1.1554621848739495) internal successors, (275), 242 states have internal predecessors, (275), 60 states have call successors, (60), 29 states have call predecessors, (60), 26 states have return successors, (71), 53 states have call predecessors, (71), 54 states have call successors, (71) [2022-03-19 06:46:12,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 406 transitions. [2022-03-19 06:46:12,291 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 406 transitions. Word has length 163 [2022-03-19 06:46:12,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:12,292 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 406 transitions. [2022-03-19 06:46:12,292 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 06:46:12,292 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 406 transitions. [2022-03-19 06:46:12,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-03-19 06:46:12,293 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:12,293 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:12,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-19 06:46:12,511 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-19 06:46:12,511 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:12,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash 674044285, now seen corresponding path program 1 times [2022-03-19 06:46:12,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:12,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [422619728] [2022-03-19 06:46:12,512 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash 674044285, now seen corresponding path program 2 times [2022-03-19 06:46:12,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:12,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624427597] [2022-03-19 06:46:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:12,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-19 06:46:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-19 06:46:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 06:46:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 06:46:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 06:46:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 06:46:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-19 06:46:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-19 06:46:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-19 06:46:12,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:12,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624427597] [2022-03-19 06:46:12,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624427597] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:46:12,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797243907] [2022-03-19 06:46:12,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 06:46:12,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:46:12,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:46:12,734 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:46:12,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-19 06:46:12,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 06:46:12,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:46:12,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-19 06:46:12,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:46:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-19 06:46:13,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 06:46:13,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797243907] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:13,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 06:46:13,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-03-19 06:46:13,137 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:13,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [422619728] [2022-03-19 06:46:13,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [422619728] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:13,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:13,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:46:13,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629243250] [2022-03-19 06:46:13,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:13,137 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:46:13,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:13,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:46:13,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:46:13,138 INFO L87 Difference]: Start difference. First operand 325 states and 406 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-19 06:46:13,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:13,221 INFO L93 Difference]: Finished difference Result 343 states and 425 transitions. [2022-03-19 06:46:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:46:13,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 203 [2022-03-19 06:46:13,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:13,222 INFO L225 Difference]: With dead ends: 343 [2022-03-19 06:46:13,222 INFO L226 Difference]: Without dead ends: 332 [2022-03-19 06:46:13,223 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-19 06:46:13,223 INFO L912 BasicCegarLoop]: 192 mSDtfsCounter, 8 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:13,223 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 918 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 06:46:13,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-03-19 06:46:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 325. [2022-03-19 06:46:13,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 238 states have (on average 1.1470588235294117) internal successors, (273), 242 states have internal predecessors, (273), 60 states have call successors, (60), 29 states have call predecessors, (60), 26 states have return successors, (71), 53 states have call predecessors, (71), 54 states have call successors, (71) [2022-03-19 06:46:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 404 transitions. [2022-03-19 06:46:13,281 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 404 transitions. Word has length 203 [2022-03-19 06:46:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:13,282 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 404 transitions. [2022-03-19 06:46:13,282 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-19 06:46:13,282 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 404 transitions. [2022-03-19 06:46:13,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-03-19 06:46:13,283 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:13,283 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:13,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-19 06:46:13,499 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:46:13,500 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:13,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:13,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2064315717, now seen corresponding path program 1 times [2022-03-19 06:46:13,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:13,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1672607174] [2022-03-19 06:46:13,501 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:13,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2064315717, now seen corresponding path program 2 times [2022-03-19 06:46:13,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:13,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209237431] [2022-03-19 06:46:13,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:13,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-19 06:46:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-19 06:46:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 06:46:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 06:46:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 06:46:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 06:46:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-19 06:46:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-19 06:46:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-19 06:46:13,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:13,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209237431] [2022-03-19 06:46:13,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209237431] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:46:13,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908631942] [2022-03-19 06:46:13,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 06:46:13,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:46:13,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:46:13,741 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:46:13,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-19 06:46:13,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 06:46:13,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:46:13,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-19 06:46:13,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:46:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-19 06:46:14,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 06:46:14,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908631942] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:14,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 06:46:14,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-03-19 06:46:14,120 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:14,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1672607174] [2022-03-19 06:46:14,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1672607174] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:14,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:14,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 06:46:14,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49899752] [2022-03-19 06:46:14,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:14,121 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-19 06:46:14,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:14,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-19 06:46:14,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:46:14,121 INFO L87 Difference]: Start difference. First operand 325 states and 404 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-19 06:46:14,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:14,200 INFO L93 Difference]: Finished difference Result 350 states and 436 transitions. [2022-03-19 06:46:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-19 06:46:14,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 206 [2022-03-19 06:46:14,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:14,202 INFO L225 Difference]: With dead ends: 350 [2022-03-19 06:46:14,202 INFO L226 Difference]: Without dead ends: 335 [2022-03-19 06:46:14,202 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:46:14,203 INFO L912 BasicCegarLoop]: 169 mSDtfsCounter, 7 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:14,203 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 318 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 06:46:14,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-03-19 06:46:14,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 329. [2022-03-19 06:46:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 242 states have (on average 1.1446280991735538) internal successors, (277), 246 states have internal predecessors, (277), 60 states have call successors, (60), 29 states have call predecessors, (60), 26 states have return successors, (71), 53 states have call predecessors, (71), 54 states have call successors, (71) [2022-03-19 06:46:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 408 transitions. [2022-03-19 06:46:14,275 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 408 transitions. Word has length 206 [2022-03-19 06:46:14,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:14,275 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 408 transitions. [2022-03-19 06:46:14,276 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-19 06:46:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 408 transitions. [2022-03-19 06:46:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-03-19 06:46:14,277 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:14,277 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:14,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-19 06:46:14,483 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:46:14,483 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:14,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1529587001, now seen corresponding path program 1 times [2022-03-19 06:46:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:14,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [275947134] [2022-03-19 06:46:14,484 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1529587001, now seen corresponding path program 2 times [2022-03-19 06:46:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:14,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363614151] [2022-03-19 06:46:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:14,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-19 06:46:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-19 06:46:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 06:46:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 06:46:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 06:46:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 06:46:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-19 06:46:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-19 06:46:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,679 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-19 06:46:14,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:14,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363614151] [2022-03-19 06:46:14,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363614151] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:46:14,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665682360] [2022-03-19 06:46:14,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 06:46:14,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:46:14,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:46:14,681 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:46:14,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-19 06:46:14,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 06:46:14,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:46:14,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-19 06:46:14,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:46:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-19 06:46:15,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 06:46:15,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665682360] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:15,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 06:46:15,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-03-19 06:46:15,044 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:15,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [275947134] [2022-03-19 06:46:15,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [275947134] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:15,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:15,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:46:15,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295719370] [2022-03-19 06:46:15,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:15,045 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:46:15,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:15,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:46:15,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:46:15,045 INFO L87 Difference]: Start difference. First operand 329 states and 408 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-19 06:46:15,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:15,135 INFO L93 Difference]: Finished difference Result 346 states and 426 transitions. [2022-03-19 06:46:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:46:15,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 206 [2022-03-19 06:46:15,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:15,136 INFO L225 Difference]: With dead ends: 346 [2022-03-19 06:46:15,136 INFO L226 Difference]: Without dead ends: 329 [2022-03-19 06:46:15,137 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-19 06:46:15,137 INFO L912 BasicCegarLoop]: 170 mSDtfsCounter, 9 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:15,137 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 825 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 06:46:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-03-19 06:46:15,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 325. [2022-03-19 06:46:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 238 states have (on average 1.1218487394957983) internal successors, (267), 242 states have internal predecessors, (267), 60 states have call successors, (60), 29 states have call predecessors, (60), 26 states have return successors, (71), 53 states have call predecessors, (71), 54 states have call successors, (71) [2022-03-19 06:46:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 398 transitions. [2022-03-19 06:46:15,199 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 398 transitions. Word has length 206 [2022-03-19 06:46:15,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:15,199 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 398 transitions. [2022-03-19 06:46:15,199 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-19 06:46:15,200 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 398 transitions. [2022-03-19 06:46:15,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-03-19 06:46:15,201 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:15,201 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:15,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-19 06:46:15,420 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-03-19 06:46:15,420 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:15,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1534631942, now seen corresponding path program 1 times [2022-03-19 06:46:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:15,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1981624534] [2022-03-19 06:46:15,421 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:15,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1534631942, now seen corresponding path program 2 times [2022-03-19 06:46:15,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:15,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097437890] [2022-03-19 06:46:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:15,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-19 06:46:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-19 06:46:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 06:46:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 06:46:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 06:46:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 06:46:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-19 06:46:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-19 06:46:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,643 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-19 06:46:15,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:15,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097437890] [2022-03-19 06:46:15,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097437890] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:46:15,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138667085] [2022-03-19 06:46:15,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 06:46:15,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:46:15,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:46:15,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:46:15,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-19 06:46:15,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 06:46:15,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:46:15,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-19 06:46:15,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:46:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-19 06:46:16,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 06:46:16,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138667085] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:16,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 06:46:16,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-03-19 06:46:16,044 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:16,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1981624534] [2022-03-19 06:46:16,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1981624534] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:16,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:16,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:46:16,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487589613] [2022-03-19 06:46:16,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:16,044 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:46:16,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:16,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:46:16,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:46:16,045 INFO L87 Difference]: Start difference. First operand 325 states and 398 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-19 06:46:16,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:16,160 INFO L93 Difference]: Finished difference Result 336 states and 409 transitions. [2022-03-19 06:46:16,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:46:16,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 206 [2022-03-19 06:46:16,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:16,161 INFO L225 Difference]: With dead ends: 336 [2022-03-19 06:46:16,162 INFO L226 Difference]: Without dead ends: 286 [2022-03-19 06:46:16,162 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-19 06:46:16,162 INFO L912 BasicCegarLoop]: 167 mSDtfsCounter, 2 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:16,162 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 822 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 06:46:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-03-19 06:46:16,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2022-03-19 06:46:16,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 208 states have (on average 1.0961538461538463) internal successors, (228), 212 states have internal predecessors, (228), 50 states have call successors, (50), 29 states have call predecessors, (50), 26 states have return successors, (54), 43 states have call predecessors, (54), 42 states have call successors, (54) [2022-03-19 06:46:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 332 transitions. [2022-03-19 06:46:16,229 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 332 transitions. Word has length 206 [2022-03-19 06:46:16,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:16,230 INFO L478 AbstractCegarLoop]: Abstraction has 285 states and 332 transitions. [2022-03-19 06:46:16,230 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-19 06:46:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 332 transitions. [2022-03-19 06:46:16,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-03-19 06:46:16,231 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:16,231 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:46:16,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-19 06:46:16,431 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:46:16,432 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:16,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:16,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2063985540, now seen corresponding path program 1 times [2022-03-19 06:46:16,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:16,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1052184888] [2022-03-19 06:46:16,433 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:16,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2063985540, now seen corresponding path program 2 times [2022-03-19 06:46:16,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:16,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375840792] [2022-03-19 06:46:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:16,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-19 06:46:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:46:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-19 06:46:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 06:46:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 06:46:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 06:46:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 06:46:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-19 06:46:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-19 06:46:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 06:46:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:46:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-19 06:46:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-03-19 06:46:16,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:16,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375840792] [2022-03-19 06:46:16,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375840792] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:46:16,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309578747] [2022-03-19 06:46:16,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 06:46:16,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:46:16,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:46:16,650 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:46:16,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-19 06:46:16,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 06:46:16,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:46:16,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-19 06:46:16,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:46:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-19 06:46:17,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 06:46:17,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309578747] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:17,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 06:46:17,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-03-19 06:46:17,072 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:17,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1052184888] [2022-03-19 06:46:17,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1052184888] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:17,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:17,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:46:17,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3333283] [2022-03-19 06:46:17,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:17,073 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:46:17,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:17,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:46:17,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:46:17,073 INFO L87 Difference]: Start difference. First operand 285 states and 332 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-19 06:46:17,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:17,130 INFO L93 Difference]: Finished difference Result 287 states and 333 transitions. [2022-03-19 06:46:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:46:17,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 211 [2022-03-19 06:46:17,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:17,131 INFO L225 Difference]: With dead ends: 287 [2022-03-19 06:46:17,131 INFO L226 Difference]: Without dead ends: 0 [2022-03-19 06:46:17,132 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-19 06:46:17,132 INFO L912 BasicCegarLoop]: 141 mSDtfsCounter, 2 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:17,133 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 692 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 06:46:17,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-19 06:46:17,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-19 06:46:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-19 06:46:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-19 06:46:17,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 211 [2022-03-19 06:46:17,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:17,133 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-19 06:46:17,133 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-19 06:46:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-19 06:46:17,133 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-19 06:46:17,135 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 06:46:17,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-19 06:46:17,351 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:46:17,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-19 06:47:50,475 WARN L232 SmtUtils]: Spent 1.55m on a formula simplification. DAG size of input: 167 DAG size of output: 162 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-19 06:48:07,833 WARN L232 SmtUtils]: Spent 17.34s on a formula simplification. DAG size of input: 162 DAG size of output: 157 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-19 06:49:40,874 WARN L232 SmtUtils]: Spent 1.55m on a formula simplification. DAG size of input: 167 DAG size of output: 162 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-19 06:49:58,232 WARN L232 SmtUtils]: Spent 17.36s on a formula simplification. DAG size of input: 162 DAG size of output: 157 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-19 06:51:14,239 WARN L232 SmtUtils]: Spent 1.27m on a formula simplification. DAG size of input: 161 DAG size of output: 158 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-19 06:51:31,670 WARN L232 SmtUtils]: Spent 17.43s on a formula simplification. DAG size of input: 162 DAG size of output: 157 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-19 06:51:49,040 WARN L232 SmtUtils]: Spent 17.37s on a formula simplification. DAG size of input: 162 DAG size of output: 157 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-19 06:53:22,280 WARN L232 SmtUtils]: Spent 1.55m on a formula simplification. DAG size of input: 167 DAG size of output: 162 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-19 06:57:44,082 WARN L232 SmtUtils]: Spent 4.36m on a formula simplification. DAG size of input: 164 DAG size of output: 161 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-19 06:59:08,456 WARN L232 SmtUtils]: Spent 1.41m on a formula simplification. DAG size of input: 162 DAG size of output: 159 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-19 06:59:23,185 WARN L232 SmtUtils]: Spent 14.73s on a formula simplification. DAG size of input: 157 DAG size of output: 154 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-19 06:59:40,559 WARN L232 SmtUtils]: Spent 17.37s on a formula simplification. DAG size of input: 162 DAG size of output: 157 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)